Features:
Works on plastic, wood and most within 5mm metal plates, including steel, brass, aluminum and copper.
Triangle flat shank prevents spinning in the chuck.
Made of high quality HSS steel, sturdy and durable.
With Titanium coated to reduce friction and heat.
Two straight groove design makes you faster, smoother cutting.

Specifications:
Material: HSS 4241
Surface treatment: Titanium plated
Sizes of the 3pcs Step Drill Bits:
4-32mm: 10mm shank and 15-step (4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32mm)
4-20mm: 8mm shank and 9-step (4, 6, 8, 10, 12, 14, 16, 18, 20mm)
4-12mm: 6mm shank and 5-step (4, 6, 8, 10, 12mm)

Package includes:
1 x Set 3pcs 15-size step drill

• Works on plastic, wood and most within 5mm metal plates, including steel, brass, aluminum and copper.
• Triangle flat shank prevents spinning in the chuck.
• Made of high quality HSS steel, sturdy and durable.
• With Titanium coated to reduce friction and heat.
• Two straight groove design makes you faster, smoother cutting.

Works on plastic, wood and most within 5mm metal plates, including steel, brass, aluminum and copper.XCSOURCE