建工钻头
材质：高速钢
Material: HSS
特性：一体式多级阶梯设计，无需频繁换钻头，一次装夹可打出多种孔径，自带倒角效果，孔口平整光滑
Features: Integrated multi-level stepped design, no need to change bits frequently, multiple hole diameters with a single clamping, built-in chamfering effect, flat and smooth hole edge
使用场合：薄板开孔、钣金加工、配电箱制作、五金维修、批量扩孔、倒角修孔等。
Application: Thin plate drilling, sheet metal processing, distribution box production, hardware maintenance, batch drilling and hole chamfering.
