* Quy cách(size) : Φ 4"(100mm),Φ 5"(125mm), Φ6"(150mm), Φ8"(200mm), Φ9"(230mm)...* Cở hạt(grit): #16, #24, #36, #40, #60, #80, #100...#2000* Xuất xứ : Korea, Janpan, Taiwan