drill bits & sets
irwin 585 63137 15pc drill set cobaltmetal index
8 % cobalt for higher heat and abrasion resistance heavy duty web construction for strength and durability 135 & 186 ; split point begins drilling immediately minimizing bit walk cutting diam 1 16 min 1 2 max cutting edge material hss finish gold oxide includes metal index case increment 1 32 point angle 135 & 176 ; quantity 15 per set sku orsno64922
irwin