722-0031T & 722-0401 阶梯钻

LONGJER NO:722-0031T
3PCS TITIAN STEP DRILL BIT SET (阶梯钻)

1.) Alloy steel(SCM), HRc 58, coat TITAN..
2.) 1/8-1/2"(13-step),3/16-1/2"(6-step),1/4-3/4"(9-step)
3.) Two-flute design for faster, smoother cutting.
4.) Automatically deburrs holes as you drill.
5.) Pack:@set-slide card,20/120set/ctn,14/15/1.3‘

LONGJER NO: 722-0401
4PCS STEP DRILL BIT SET (阶梯钻)

1.) Self-starting multiple hole sizes
2.) Ideal for drilling steel, copper, brass, aluminum and other thin materials.
3.) Contains one each of
13 hole size from 1/8” ~ 1/2” & in 1/32” incrementsx2pc
9 hole size from 1/4” ~ 3/4” & in 1/16” increments
6 hole size from 3/16” ~ 1/2” & in 1/16” increments
4.) Alloy steel (SCM), HRc 58, coat TITAN.
5.) Pack:@set-slide card,12/120set/ctn. 18/19kgs/1.4‘