This handpiece is made of a stainless steel body. Handpiece RPM extends to a maximum of 40,000. Handpiece by Saeyang Marathon offers good handling convenience. This is an autoclavable handpiece that offers precision and reliability. RPM 0 - Max 40,000 RPM Weight : 52 Gms. Ratio 1:1 Length x Diameter : 92.95 x 19.6 mm Max Temp :135C