Tender For bid to ras corrigendum : supply of complete set of spade drill arrangement for deep hole drilling of dia 28 to 34 mm and 830 mm deep , complete set of spade drill arrangement for deep hole drilling of dia 38 to 45 mm and 830 mm deep , suitable coated insert of dia 32 mm for machining of material mentioned in annexure-a-1 to suit i , suitable coated insert of dia 40 mm for machining of material mentioned in annexure-a-2 to suit i