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Letter Size 3-Ring Binder Mechanisms (Price per Box)


3-Ring Binder Mechanisms (Silver, Black, & Brass)
Round Ring Close-Up
Round Ring Close-Up, Back
3-Ring Binder Mechanisms (Letter Size, Round Ring)
3-Ring Binder Mechanisms (Letter Size, Slant-D Ring)
Slant-D Ring Close-Up
Slant-D Ring Close-Up
Colored Binder Mechanisms
Colored Binder Mechanisms
How to Measure a Ring Binder
3-Ring Binder Mechanism Spine Parts
Black Metal 3-Ring Binder Mechanism Spine Parts

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Starting at: $41.50

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Qty/Pack : Make a selection above to see pieces per box

Packaged Quantities

Ring SizeColorQty / Box
1/2" Silver 50 pcs
Black 200 pcs
3/4" Silver 50 pcs
Brass 200 pcs
1" Silver 50 pcs
Black 208 pcs
Brass 160 pcs
1 ½" Silver 50 pcs
Black 144 pcs
Brass 192 pcs
2" Silver 50 pcs
Brass 54 pcs
2 ½" Silver 50 pcs
3" Silver 50 pcs
4" Silver 50 pcs


Sometimes called ring binder parts or ring binder hardware, ring mechanisms are the spine pieces found on the inside of ring binders. These ring binder spines are letter size for standard 8 ½" x 11" sheets. They feature three rings with standard 4 ¼" spacing between the rings, two boosters for easy ring opening, and holes on each end for use with binder rivets and a rivet setter tool.

Ring binder mechanisms are a popular solution for making your own custom binders, unique display swatches, and much more. You can buy letter size 3-ring binder mechanisms online in ring sizes from 1/2" up to 4", some sizes available in both round and slant-d ring style options. All sizes are available in silver mechanisms, and several sizes are also available in black and brass colors. We sell ring binder mechanisms in full boxes; depending on the color and ring size, the quantity per box will vary. Make a selection below to see the packaged quantities.

3-Ring Binder Mechanisms (Silver, Black, & Brass)

Letter Size 3-Ring Binder Mechanisms (Price per Box)






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