Check the listing for details. Hex Pattern Assorted Size M-LOK MLOK Handguard Rail Slot Cover - w/Hardware. Condition: New. Listed at 28.60 USD. Summary- hex pattern rail covers - should fit all standard M-Lok slots - designed to evenly cover 1, 2, 3, 4 slots and evenly butt up next to each other - tabs on back side to help with spacing and alignment - textured face and sides - made from high temp PLA plastic - made in the USA with US materials - five colors available (desert tan, OD (olive drab) green, grey, white, and black) Disclaimers - tan is listed as "desert tan", NOT FDE (flat dark earth) - it may or may not match variants of FDE, but isn't promised - to save on costs, T-nuts are made of plastic. Please be careful when tightening, not to strip the nuts. Screws are steel. Dimensions 1.6" 3.15" 4.75" 6.3" Included 8 - assorted size M-LOK rail covers 2 - 1.6" 2 - 3.15" 2 - 4.75" 2 - 6.3" 20 - M4 x 8mm flat head hex screw 20 - M4 T-nuts Please contact us for larger quantities, or if another color or style is desired.