卢比莱碧玺4.965c t

钨钢球合金球4.95/4.955/4.96/4.965/4.97/4.975/4.98mm钢珠

正品钨钢珠4.9mm4.92/4.94/4.95硬质合金球4.96/4.965/4.98冲挤孔