Check the listing for details. Holster Making Washers - EPDM Rubber - Black - Select Size and Quantity Below. Color: Black, Condition: New. Listed at 7.97 USD. Holster Making Washers - EPDM Rubber - Black - Select Size and Quantity Above These are black HOLSTEX brand EPDM rubber holster and sheath attachment mounting and retention washers that are commonly used with in Kydex holster making with TLMAB mounting posts, Chicago screws, slotted posts, sheath and holster mounting assemblies, and more. They are used to cushion and silence the contact points between the holster and its mounting attachments, and to create retention for encased items, such as guns and knives. We've tested many brands of over-the-counter washers when developing these, and Holstex Brand are the top-of-the-line. They are used and endorsed by professional kydex and leather gun holster and knife sheath makers around the world. HOLSTEX brand EPDM synthetic rubber is a bit more rigid than neoprene and allows less flex between the attachment and the holster/sheath. This is preferred by most custom holster and sheath makers. Washer Assortment Combo [70 PCS]: Durometer = 60 Color = Black (10 PCS): 0.500in OD x 0.180in ID x 0.065in Thick(10 PCS): 0.500in OD x 0.180in ID x 0.125in Thick(10 PCS): 0.500in OD x 0.180in ID x 0.187in Thick(10 PCS): 0.500in OD x 0.180in ID x 0.250in Thick(10 PCS): 0.500in OD x 0.180in ID x 0.375in Thick(10 PCS): 0.500in OD x 0.180in ID x 0.480in Thick(10 PCS): 0.500in OD x 0.180in ID x 0.625in Thick Variation Size Option: Outer Diameter x Inner Diameter x Length/Thickness Quantity: [20 PCS] = 20 Washers [70 PCS] = 70 Washers [100 PCS] = 100 Washers For more holster making kits, holster making supplies, and sheath making supplies, see (https://www.ebay.com/usr/ckkindustries)