300000–350000 r.p.m
1-5Pcs Dental High Speed Handpiece Push Button Standard Head 4 Hole NSK Style
USA NSK Style Dental High Speed Push Button Turbine Handpiece 4 Hole. 5pcs in one box and there are altogether 20 types. So you will get the following 20boxes/100PCS Burs. Stalk who used high-grade stainless steel, high strength, no rusty.