1. Material:specially developed raw materials
2.burr:
wear-resisting
and
high strength
2.Soldering:
silver
and
copper
soldering;
No sealing off
(Zigong Fengrui Tools)
4. Superior
quality
:
12 years factory
in
the
base
of carbide burrs in Zigong,
China
5.
compensating 2
for 1 bad burr
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