Ronix RH-5901 Step drill 4-20mm
spiral flute drill bit new step drill bit for Multiple Hole Metal drilling
Features
-- Step design enables multiple-diameter drilling with only one bit
-- Step drill bit with 2-flute design for drilling in steel, stainless steel, copper,aluminum sheets
-- Made of high-speed steel and titanium coated for more durability and long life
-- 3-flat shank prevents slipping in drill chuck
-- New Speed Point tip for fast penetrate and preventdrill bit walking