This is an Aluminum Spacer Set by Tamiya for the TRF414M, TRF414M-WCR and the TB-Evolution II. Blue and silver anodized aluminum construction. Four 0.5mm thick silver spacers. Four 1.5mm thick silver spacers. Four 2.5mm thick silver spacers Four 1mm thick bluer spacers Four 2mm thick blue spacers. Four 3mm thick blue spacers. Assembly on vehicle. Outside diameter of washers: 5.65mm (.221") Inside diameter of washers: 3.12mm (.123") These spacers are used on the above mentioned kits, but will also function in other places where the appropriately sized washer is needed. pjm 2/12/03 ir/jxs &