Supply of Heavy Duty Battery Operated Drilling Machine With 4 Nos Chamfering Tool For 45 Degree Of 17.5Mm Hole With Suitable Size Of 20/22Mm Chamfering And 04Nos 17.5Mm Hss Drill Bits . Battery Capacity:18V, Minimum 4Ah With Spare Battery . Make: Bosch, Gsr 18V-50 Or Bds Or Makita Or Similar..