Sorby TRAC Tool Rest Adjustment Collar, 1 in. The Sorby TRAC Tool Rest Adjustment Collar is designed to solve a common problem faced by woodturners. Often, when adjusting the tool rest height, the rest drops and the preferred position is lost once the locking handle is released. This innovative collar ensures the tool rest remains at the set height even when the locking handle is loosened, allowing you to reposition the tool rest without the need to reset the height before locking it back in place. The TRAC enables easy height adjustments of up to 1/2 inch (13mm) by simply turning the outer adjustment ring. Its Acetal seating disc ensures smooth and effortless operation. For results, adjust the outer ring so about 1/4 inch (6mm) of the inner ring protrudes, allowing for seamless up and down movement. Model Number: LRSTRAC24