Features Made of a Black Nylon Material Adjustable Height Collars 1/4" inside diameter Secured With A Single Set Screws Great for Making Custom Size Body Mounts These Are Adjustable From 3" to 3.5" In Height Requirements Body Clip Pins 0.050 Hex Wrench 1/16" Hex Wrench Includes 2 Mounting Posts 2 Collars 2 Set Screws 4-40x1/8" use 0.050 hex wrench 2 Mounting Screws 4-10x3/8" flat-head use 1/16" hex wrench