Gem Bids For 8 Ratchet Wheel Hob To Drg. No. 54-c-30022 To Mfg Compt. No. 675-64-292 Design And Manufacturing Of Hob To Alloted Drg. No. 54-c-30695 For The Comp. No. 765-17-47 Design & Manufacture Of Involute Serration Hob To Cut 15 Teeth 20 Deg Pa Alloted Drg No. 54-c-30699a