Check the listing for details. 19 Ring Binding Comb Clear- 1" (100pcs). Condition: New. Listed at 24.00 USD. These round-shaped Clear plastic binding combs can be opened and closed around your books as many times as needed. The standard length for these traditional plastic binders is 11" with 19 total rings and compatible with any standard 19-ring comb binding machine. The combs are perfect for standard letter size papers and books that continuously gets edited or added on to. The spine on our plastic combs are for easy and fast book editing, as the combs can be re-opened and closed shut as many times as is needed without damaging the book pages as well as cut into smaller .When choosing your comb size, the best way to ensure the correct diameter of comb for your book is to assemble the entire book (including covers), let it lay flat and loose on the table (do not press down), and measure the thickness of the stack and add 1/8" to that measurement to get the comb diameter recommendation. Sheet Capacity: 186-210 Sheets