1.chip-free holes thanks to scoring cut of the spurs
2.Its life time is about 50 times longer than carbide boring bits
1.used on portable boring machines2. for chip-free drilling in solid woods and wood-based...
hand tap Specifications:
1.din352 hand tap,3pcs in a set
2.rich export experience and good service
3.quick delviery time
hss hand taps:hand tap-thread are made of Gcr15 meterical by roll or rub...
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