FOREDOM 44HT HANDPIECE 3 COLLETS UP TO 1/4&rdquo; SQUARE DRIVE HEAVY DUTY MOTORS (E 9) NOVELTOOLS FOREDOM HANDPIECE 44HT SQUARE DRIVE The H.44HT is a collet type Rotary Handpiece with a square drive, that accepts accessories with up to 1/4" diameter shanks. This Handpiece has positive locking mechanism (locking ring FOR HEAVY DUTY FLEX SHAFT MOTORS H.44HT GENERAL PURPOSE HANDPIECE WITH 3 COLLETS UP TO 1/4