... (mm):1500,2000, 2500, 3000,3500,4500 can be selected. grinder sharpener Precision type:High-precision, high transmission ball ... ,and durability.Taiwan inverter, easy to control speed of grinding wheel, grinder running smoothly, no impact.Germany technology and ... grinder.it is mainly used for high level import knife .using high-speed roller linear guide for reciprocating motion. it can adjust speed ...