This is the Tamiya Aluminum Gear Differential Unit Cover. FEATURES: Compatible with Tamiya TA06, TA06 PRO, TA06R, XV-01, FF-03R and TRF201XM chassis cars. Increases durability of the differential casing Aluminum construction, blue anodized finish INCLUDES: Gear Differential Unit Cover Five Mounting Screws Two Bushings jxs 01/24/17 ir/jxs