The zinc cast top of the t 4 model incorporates the key components of the main shaft universal support and motor assembly resulting in superb accuracy as standard the universal support is held in two sleeves in the zinc cast top meaning that the improved locking design and tighter tolerances will give even better results both designs give improved accuracy and precision for easy sharpening on the new tormek t 4 the t 4 model is the latest incarnation in a long line of tormek water cooled gr