4-39mm HSS Round Shank Titanium Coated Step Drill/Pagoda Drill/Ladder Drill

Description: 4-39mm HSS Round Shank Titanium Coated Step Drill/Pagoda Drill/Ladder Drill Specification: Material:High speed steel 4241 Size: 4-39 mm (4, 6, 9,12,15,18,21, 24, 27, 30, 33, 36, 39)mm Shank:10mm(dia),22mm(L) Total:107.5mm(L) Allow 1-3mm measurement error. Features: 1, The ladder of its unique structure, a bit can open a variety of specifications of aperture. 2, Do not need to use center punch, compared with the ordinary twist drill is not easy to be broken. 3, Deburring, chamfering, elliptic hole enlargement, twist drill, the function of them was unable,but it is possible. 4, The use of tools: drill, bench drill.Work while water cooling, can effectively extend the service life of drill bit. Package Included: 1x Titanium Step Drill More Details: