- Zero suck-back sanitary head system; Strong enough clamping force; Tighter needle grasping; Three-hole atomization brings better cooling effect; High torque handpiece Imported Germany Ceramic Bearing Wear-resistant cage enables longer service life. - High Torque Handpiece Easy Cutting Use fluid analysis software to optimize intake pipe. The cast-in intake pipe inside head adopts circular cone shape pipe as a transition, realizing smaller air-resistance wind wheel with baffle endows venting with directionality 75° wind wheel windward side design helps to efficiently captures the energy of compressed air bringing higher efficiency