直锥柄扩孔钻
straight taper shank core drill
硬质合金焊接式锥柄扩孔钻
carbide welded taper shank core drill
锥柄扩孔钻
taper shank core drill
Core drills with Morse taper shanks
钻孔扩孔
bore hole drilling and enlarging
大螺旋角直柄钻头
high-helix straight shank drill
滚轧直柄钻头
roll-forged straight shank drill
厚钻心直柄钻头
heavy-web straight shank drill
小螺旋角直柄钻头
slow-helix straight shank drill
硬质合金直柄钻
straight shank carbide drill
钻孔直剪仪
borehole direct shear device
锥柄三刃扩孔钻
taper shank three-edge hole-dilating drill