Large HSS Spiral Groove Step Drill Bit

Large HSS Spiral Groove Step Drill Bit, 10 Sizes Cobalt coating High Speed Steel 1/4” to 2” Drill Bit for Sheet Aluminium Metal Wood Hole Drilling, Big Multiple Hole Stepped Up Bit for DIY Lovers

Large HSS Spiral Groove Step Drill Bit, 10 Sizes Cobalt coating High Speed Steel 1/4” to 2” Drill Bit for Sheet Aluminium Metal Wood Hole Drilling, Big Multiple Hole Stepped Up Bit for DIY Lovers

✅ The step drill bit is made from upgraded high speed steel characterized by well-balanced toughness, wear resistance and red hardness properties for better and faster hole -drilling performance. The titanium coating makes the drill bit more durable so that it can last for years with uncompromised quality.

✅ The spiral dual-flute design prevents metal fillings from flying around and clears chips faster thus it can drill more smoothly without heating up.

✅ The rapid strike tip drills twice as fast as the average step drills and can drill acrylic, PVC, wood, aluminum and iron sheets up to 0.2’’ in thickness.

✅ CORTOOL drill bit is bigger in size so it can drill holes with larger dimensions.

✅ 10 hole sizes: 1/4; 3/8; 19/32; 3/4; 1'; 1'3/16; 1'3/8; 1'5/8; 1'3/4; 2'.