Cheap, plastic strip (wavy) with 2 velcro strips glued to each side. The description states it will go from 3/4 inch to 1 1/2 inches. I don't know what kind of ruler you use, the SMALLEST I cpuld get this was 1 1/4 inches, and it looks like cheap plastic on the outside. Do yourself a favor, and get a wide roll of electricians tape (2" should be fine). Lay out the tape, place your wired on it, and roll it up. You can still cut small holes in it if you need to have wires sticking out at various points. I very rarely write reviews, but I HAD to for this cheap POS.
50Pcs Adhesive Cable Clips, Cord Holder Wire Management For Car, Office And Home (Black)
42 Review
25 Pieces Desk Wire Organizer Cable Ties Zip Ties Adhesive Cord Clips Cable Management Cord Keeper Desk Wire Management
25 Review
Organize Your Cords With LuBanSir'S 3 Pack Extension Cord Storage Straps
27 Review
Reusable Silicone Magnetic Cable Ties, 7.48'' Twist Ties For Bundling And Organizing USB Charging Cords, Fridge Magnets - 14 Pack (7 Colors) By Fironst
24 Review