A dumbbell whose weight can be changed on the same handle.
How Do Adjustable Dumbbells Work? Dial, Pin and Twist Mechanisms ExplainedHome gym glossary
Plain meanings for home gym equipment, adjustments and space planning. Each term links to a guide that puts it to use.
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A
- Adjustable dumbbell
- Adjustment ladder
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A stepped support that holds a bench backrest at selected angles.
REP AB-3000 2.0 FID Adjustable Weight Bench: Specs and Fit in 2026
B
- Back pad
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The padded bench surface that supports the back.
REP AB-3000 2.0 FID Adjustable Weight Bench: Specs and Fit in 2026
C
- Clearance
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The free space needed around equipment for movement, access and use.
Home Gym Layout: Plan Clearance Before You Plan Equipment - Combined figure
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A bench load rating that includes the user's body weight and the weights being used.
REP AB-3000 2.0 FID Adjustable Weight Bench: Specs and Fit in 2026 - Cradle
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The base that holds a selector dumbbell and its unused plates during a weight change.
How Do Adjustable Dumbbells Work? Dial, Pin and Twist Mechanisms Explained
D
- Decline
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A bench position with the head end lower than the hips.
REP AB-3000 2.0 FID Adjustable Weight Bench: Specs and Fit in 2026 - Dial
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A turning selector used to choose which weight plates lift with a dumbbell handle.
How Do Adjustable Dumbbells Work? Dial, Pin and Twist Mechanisms Explained
E
- Expansion kit
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Extra parts that extend a compatible adjustable dumbbell's weight range.
How Do Adjustable Dumbbells Work? Dial, Pin and Twist Mechanisms Explained
F
- FID
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Short for flat, incline and decline: the three backrest positions offered by this type of bench.
REP AB-3000 2.0 FID Adjustable Weight Bench: Specs and Fit in 2026 - Flat bench
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A bench with a horizontal support surface for the body.
6 Best Folding Weight Benches for Small Home Gyms in 2026 - Floor mounting
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Securing equipment to the floor with the fixings specified by its maker.
Power Rack vs. Squat Rack: Structure, Safety and Footprint Compared - Folding bench
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A weight bench designed to fold into a smaller shape for storage.
6 Best Folding Weight Benches for Small Home Gyms in 2026 - Folding wall rack
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A wall-mounted barbell rack whose uprights fold back toward the wall for storage.
5 Best Garage Gym Squat Racks for Low Ceilings and Shared Bays in 2026 - Footprint
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The floor area occupied by a piece of equipment.
Power Rack vs. Squat Rack: Structure, Safety and Footprint Compared
I
- Incline
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A bench position with the backrest raised above horizontal.
REP AB-3000 2.0 FID Adjustable Weight Bench: Specs and Fit in 2026
J
- J-cups
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Hook-shaped supports that hold a barbell at a chosen height on a rack.
Power Rack vs. Squat Rack: Structure, Safety and Footprint Compared
L
- Leg roller
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A padded cylinder used to help hold the legs in position on a bench.
REP AB-3000 2.0 FID Adjustable Weight Bench: Specs and Fit in 2026
P
- Pin and pipe safeties
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Metal safety bars with outer sleeves that span a rack to catch a barbell.
Power Rack vs. Squat Rack: Structure, Safety and Footprint Compared - Plate-loaded
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Loaded by adding separate weight plates by hand.
How Do Adjustable Dumbbells Work? Dial, Pin and Twist Mechanisms Explained - Power rack
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A frame with front and rear uprights that supports a barbell and compatible safety catches inside it.
Power Rack vs. Squat Rack: Structure, Safety and Footprint Compared
R
- Resistance band
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An elastic exercise band whose resistance increases as it stretches.
9 Best Small Home Gym Equipment Picks That Save Space in 2026
S
- Selector pin
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A removable pin placed at a marked setting to select the weight in a dumbbell stack.
How Do Adjustable Dumbbells Work? Dial, Pin and Twist Mechanisms Explained - Slide-pin system
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A dumbbell selector with sliding pins for choosing larger and smaller weight steps.
How Do Adjustable Dumbbells Work? Dial, Pin and Twist Mechanisms Explained - Smith machine
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A machine whose bar travels along guides rather than moving freely.
8 Best Squat Racks, Power Racks and Smith Machines for Home Gyms in 2026 - Spotter arms
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Supports that project from rack uprights to catch a bar outside the frame when used as directed.
Power Rack vs. Squat Rack: Structure, Safety and Footprint Compared - Squat stand
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A pair of uprights that holds a barbell, with an open area behind the posts.
Power Rack vs. Squat Rack: Structure, Safety and Footprint Compared - Steel gauge
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A numbering system for steel thickness; it does not by itself describe a rack's strength.
Power Rack vs. Squat Rack: Structure, Safety and Footprint Compared - Step size
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The difference between two adjacent weight settings.
How Do Adjustable Dumbbells Work? Dial, Pin and Twist Mechanisms Explained - Stored vertically
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Storing a bench standing on end, only where the maker permits it.
REP AB-3000 2.0 FID Adjustable Weight Bench: Specs and Fit in 2026 - Strap safeties
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Strong straps fitted between rack posts to catch a bar inside the rack.
Power Rack vs. Squat Rack: Structure, Safety and Footprint Compared - Stringer
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A horizontal mounting board or plate that spreads wall-rack fixings across suitable studs.
9 Best Foldable Gym Equipment Picks for Small Rooms in 2026 - Stud
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A framing member inside a wall that may provide a fixing point for equipment, subject to its installation instructions.
9 Best Foldable Gym Equipment Picks for Small Rooms in 2026
T
- Training zone
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The area kept clear for exercises, with equipment stored around it.
Home Gym Layout: Plan Clearance Before You Plan Equipment - Twist-handle system
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A dumbbell mechanism that selects weight when you turn the handle in its cradle.
How Do Adjustable Dumbbells Work? Dial, Pin and Twist Mechanisms Explained
U
- Upright
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A vertical rack post with mounting holes for hooks and attachments.
Power Rack vs. Squat Rack: Structure, Safety and Footprint Compared
W
- Wall hanger
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A wall fixture that holds a separate bench off the floor after you lift it onto the support.
4 Options for a Weight Bench That Folds Up to Wall in 2026 - Wall-mounted
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Fixed to a wall instead of supported only by the floor.
9 Best Foldable Gym Equipment Picks for Small Rooms in 2026 - Weight capacity
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The maximum load stated by the maker for a particular product or use.
How Do Adjustable Dumbbells Work? Dial, Pin and Twist Mechanisms Explained - Westside hole spacing
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Closer rack-hole spacing in the bench area for finer adjustment of bar supports and safeties.
Power Rack vs. Squat Rack: Structure, Safety and Footprint Compared