discount 70% in 2018-09-22 to 2018-09-24
price: USD$ 38.50
freight :USD$7.00,(Postal parcel)
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SPT is a straight thread (straight thread) pipe tap, which is used to process the parallel thread of taper pipe thread and parallel pipe thread.
PF inch pipe tapper, 55 degrees teeth angle, Whitworth family, is mainly used for mechanical bonding (with parallel threads and parallel threads) with thread tapping.
NPS is the American pipe tapper, 60 degree belongs to the mechanical connection (non sealing) with a straight pipe thread, can free fit on the device.