PT Magnum is super porous wheel developed from PT wheel is a longtime seller.
Maximum pore diameter is 6mm.
Moreover, combination of large and small pores increases poresity.
PT Magnum is very effect for heat-labile work, grinding occurs a lot of chips and grinding is easy to clogging such as rubber, urethane, and resin.
Using both PT and PT Magnum as the situation demands expects additional effect.
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