discount 70% in 2018-09-17 to 2018-09-19
price: USD$ 42.00
freight :USD$7.00,(Postal parcel)
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Spiral fluted tap
Suitable for machining screw thread blind hole, experience tells us: the processing of black metal, spiral angle selected smaller, in general30Degrees, ensure the strength of helical gear. The processing of non-ferrous metal, spiral angle is selected larger, in45Sharp cutting some degrees.