Ruko step drill hss sp gr. 6, tialn8U269987
Ruko step drill hss tin gr. 146F067731
Step drill drilling range 6–30.5 mm HSS spiral-grooved no. of cutters 2 no. of s2B138327
Ruko Step drill HSS, CBN ground,spiral fluted with split point, short design6Y333291
Optima Step drill 9 STEPSX8Q1302.009.008
Ruko Step drill set HSS-TiN spiral fluted, sizes 0/9, 1, 2 in plastic case - 3 pcs7Q960813