discount 70% in 2018-09-24 to 2018-09-26
price: USD$ 62.16
freight :USD$7.00,(Postal parcel)
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It is suitable for aviation, chemical industry, because of melting heat treatment after aging treatment of titanium alloy with hardness of 40~45HRC, suitable for high carbon steel, tool steel, forging alloy steel and HRC20~45 quenched and tempered steel company, wide range of application, long tool life. The spiral groove taps are spiral, and they are divided into left and right according to the rotation direction. When the left-hand spiral groove tap is tapped, the chip is arranged downward, which is suitable for through hole.