
The main component of the working part (head) is green silicon carbide (GC) which is made of petroleum coke and high-quality silica and smelted at high temperature. The hardness is between corundum and diamond, and the mechanical strength is higher than corundum.
Type:9#、10 #、11 #、20 #、31 #、33 #、35 #、42 #、48 #、58 #
Specs:10 pieces/box
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