... portable type,grinding 2,3,4,6 blade of general end mill. it is for endmill grinding machine,capacity 3-13mm ... to sharpen the drills quickly. Economical price, grinding fast and high accuracy. Diamond grinding wheel.Low maintenance, good grinding result. ... stably,extra motor life. BENEFITS Quickly sharpen standard drills into high-performance, self centering split point drills Outstanding value, will ...