20pcs Inch Tap Dies Set 1/2''-6''NC Screw Thread Plugs Taps Carbon Steel Hand Screw Taps Hand Tools ,Adjustable and Accurate

Material: High Carbon Steel DIY Supplies: Metalworking Type: Tap & Die Quantity: 20pcs Size: 1/2'',7/16'',3/8'',5/16'',1/4'',12'',10'',8'',6''NC