Hss Shank Type (worm Gear) Hob Cutters They are Manufactured Generally to Customers Drawings and Specifications in Topping and Non-topping Forms Shank (worm Gear) Hobs Can Be Supplied in Machine Relieved as Well as in Ground Relieved Forms. These Cutters Can Be Supplied in Single Start and Multistart Pitches as per Requirements of the User. Maximum Length of the Cutter (including Shank) that Can Be Had is 400 Mm.