RUKO
阶梯钻, 4-30mmX2MM
CK TOOLS
6mm - 20mm Multi Step Drill with HSS Construction and a Self Starting Tip
阶梯钻, 4-20mmX2MM
EXACT
阶梯钻头, 4-12MM
阶梯钻, HSS, 4-20mm
阶梯钻, HSS, 4-30mm
阶梯钻, HSS, CBN, 0.4-20mm