HSS Titanium Coated Step Drill Bit Set, 1/4" Hex Shank Drive Quick Change High Speed Steel Cone Drill Bit for Plastic, Wood, Sheet Metal Hole Drilling

HSS Titanium Coated Step Drill Bit Set, 1/4" Hex Shank Drive Quick Change High Speed Steel Cone Drill Bit for Plastic, Wood, Sheet Metal Hole Drilling

【Widely Used】Perfect Step Drill Bits suitable for drill holes in various material： within 3mm/0.12 inch (Iron Plate, Copper Plate, Aluminum Plate); within 5mm/0.2 inch (Wood, PVC sheet, Insulation Boards). Not suitable for hard and brittle materials such as stainless steel, glass, tile floors, walls etc. 【STEP DRILL BITS】 The step drill bits are made of classic high-speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, wood board, copper, stainless steel and many other types of sheet metal. 【SET INCLUDES】Bit #1 (5 steps): 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm); Bit #2 (9 steps): 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm); Bit #3 (15 steps): 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm,30mm,32mm) 【Hexagonal Shank 】The hexagonal shank titanium drill uses a double-edged design to make cutting smoother and smoother;Increases cutting speed with self-centering and prevents walking. 【WELL PERFORMED 】 The multiple hole drill bit set include many size, which can cuts through steel, sheet metal, wood board and other surfaces creating relatively clean holes as you drill. Suitable for home DIY, and general building/ engineering use.t slippage and shedding during the rotation.

Feature：
Step Drill Bit Set.
Automatically deburrs holes as you drill,
Two-Flute design gives you faster and smoother cutting.
Titanium Nitride Coating For Cooler Running,
Quick-change 1/4" Hex Shank,High Speed Steel for Long Life.
These Step Drill Bits are ideal for variety of materials from metal, plastic, fiberglass to wood.
They also help to enlarge existing holes ,
The two flute design tips made the penetration faster without chipping.

Specification:
Material: High speed steel
Finish: Titanium
Colour: Golden
Weight: 110g
Measurement:
4-12 5 Steps (Diameter 4, 6, 8, 10, 12mm)
4-20 9 Steps(Diameter 4, 6, 8, 10, 12, 14, 16, 18, 20mm)
4-32 15 Steps(Diameter 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32mm)