Comparison : Item # 638-43004, 1/16 135 Degree (H.S.) Screw Machine Drill
Item # 638-43005, 5/64 135 Degree (H.S.) Screw Machine Drill
Item # 638-43006, 3/32 135 Degree (H.S.) Screw Machine Drill
Item # 638-43007, 7/64 135 Degree (H.S.) Screw Machine Drill
Item # 638-43008, 1/8 135 Degree (H.S.) Screw Machine Drill


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