Adopting high speed steel material and going through meticulous process, this 99pcs HSS High Speed Steel Titanium Coated Step Drill Bits Set features the moderate hardness, high wear resistance and good durability. It has a wide application, such as angle iron, common metal, aluminum, copperware, plastic and wood etc. With this drilling bit, it will be much easier to punch holes. Also, those high-hardness material such as stainless steel is not recommended. If you want to have more labor-saving punching, do not miss the chance!

Features

• Tiny HSS drill bits, offer the best heat resistance and good performance for drilling
• Good toughness, wear resistance, strong drilling capacity
• Suitable for wood, aluminum, plastic, etc.
• Precise, accurate and efficient
• Orientation department has orientation and ground effects
• Spiral chip groove to guide crumbs
• Sharp and twisted flute will make the drilling be more easy and effortless
• Straight shank design is more suitable for many electric drills and drilling machines

Specifications

Package Includes

• 16 x 1.5mm Drill Bits
• 16 x 2mm Drill Bits
• 15 x 2.5mm Drill Bits
• 10 x 3mm Drill Bits
• 10 x 3.2mm Drill Bits
• 8 x 3.5mm Drill Bits
• 8 x 4mm Drill Bits
• 3 x 4.5mm Drill Bits
• 3 x 5mm Drill Bits
• 4 x 5.5mm Drill Bits
• 2 x 6.5mm Drill Bits
• 2 x 8mm Drill Bits
• 2 x 10mm Drill Bits