Take a left handed and right handed trapezoidal thread from and accurately join them together and you have a simple gripping or expanding device. Numerous customers have used this concept within their machines. By being able to utilise the large range of lead screw diameters, as well as pitches, opens up the products possibilities. ABSSAC can supply the complete unit including fitted bearing sets which are precision guaranteed. Why not ask one of our engineers for some further information.