Standard 4-hole fix connection, for contraangle and straight handpieces without light Product application, usage and indication The W&H air motors are characterized by high motor power and a long lifespan. Power can be controlled smoothly in both forward and reverse drive. They are very quiet and light. external spray, forward / reverse drive, speed: up to 25.000 rpm*, without light, external spray, standard 4-hole connection Features and Benefits Short and lightweight, 360° rotation of the contra-angle handpiece on the motor, Extremely powerful motor with high torque, Long lifespan, Thermo washer disinfectable and sterilizable