This bench chain grinder is an important tool for people who need to keep their chain saws sharp. Chains from 1/4" to 0.404" pitch are easily sharpened thanks to a built-in hydraulic assist that closes the chain vise automatically each time the motor and wheel are lowered, eliminating manual locking and unlocking of the vise as each cutter is sharpened. Key Specs Motor 3/8 HP, 3 Amp Rated RPM 3,400 Volts 110 Chain Pitch (in.) 1/4 - 0.404