Feature: Slim body Low noise & vibration Anti-overheating system Durable 1:5 speed increasing Clean head system Better cooling effect High hardness Wearable Corrosion resistance Specification: Increasing 1:5 ratio Clamping force:4.0kg Internal four spray Rotate speed :200000rpm Chuck type:push button Import ceramic bearing Noise :≤58db Bur applicable:∅1.59-1.60mm ISO stand connector