Rvfm to 220 kits type 2 rvfm t0220 kit 2 mica semiconductor mounting kit washers and bushes to 220 case to 220 kit type 2 m3 clearance for screws kit contents 10 mica washers and 10 bushes to suit tip31a 7805 etc supplied in pack of 10 rvfm t0220 kit 2 pk 10 kits type 2