钻孔能力：木材、塑钢最大40mm 铜、铝锌最大16mm 钢最大6mm 钻孔头可承受高速运转达4500RPM 适合家具类、玩具组合系列 可装在一般钻孔机使用 Boring capacity :wood and plas tic steel for max. ∮40mm Copper,aluminium and zinc for max.∮16mm Iron and steel for max.∮6mm Bearable speedy rotation for boring head is 4500RPM Fit for the furniture and toys com bination series Can be fixed in general boring machine for using