This is the optional Shock Cap and Spring Adjuster Set for the EB-48 Buggy (TKRC5000), and SCT410 Short Course Truck from Tekno RC. Plastic construction Compatible with the standard build of shocks with the bleeder hole on the side, emulsion style with a screw in the cap, and vented build with a hole in the top of the cap and side with a bladder Two Shock Caps, Adjusters, four O-Rings and two Screws When used on the EB48, the following parts are needed to complete the emulsion style build; TKRC6009, Shock O-Ring and Bladder Set TKRC5125, 7x3.5mm O-Rings TKR1341, 4x6mm Flat Head Screws jxs 07/01/13 ir/jxs &