... guide and inventer and all screw. blade grinder , knife grinding machine, knife sharpener Max.grinding length(mm):1500,2000, 2500, 3000 ... ,3500,4500 can be selected. grinding machine knife Precision type:High-precision, high transmission ball screws, efficiency,and ... impact.Germany technology and germany design for grinder.it is mainly used for high level import knife .using high-speed roller ...