Dolmar, Makita, Wacker BTS Cylinder Kit 50mm This is a new aftermarket cylinder kit for a Dolmar PS7300 and a bargain at this price. Also fits the Makita saw DCS7301 and the Wacker BTS1035 concrete saw. Kit includes every thing in picture, is a 50mm piston. These pistons are good quality, I have fitted many myself. Any Questions just ask. WA-CYLK-DCS7300