Multiplier contra-angle 1:5 handpiece are generally more stable than high speed handpieces. There is no heat, adapts to surgery. the maximum speed is 200,000 rpm.360 °rotating movement; stainless steel material.Whichever multiplier contra-angle handpiece you choose, you will receive top-quality products that make work enjoyable.Further, its excellent durability keeps best performance after repeated autoclave max.135 C.