CAM operated - set adjustment screw just once for entire set of pistons
Insert a full set of pistons in half the time, with half the work
Wrinkle band can't slip down into the cylinder
Wrinkle band ring compressor is 4 ways better - low friction, wrinkle band, CAM operated and faster. When installing pistons back into the cylinder bore, nothing works better than the right piston ring compressor. Eliminates risk of breaking piston rings and piston ring lands.
