3PCS HSS Step Bits, High Speed Steel Step Drill Bits Set - (4-12mm, 4-20mm and 4-32 mm) Cone Drill Bits Hole Cutter for DIY Plastic Wood Metal Aluminum Copper

• VERSATILE SET: Three-piece HSS step drill bit set with sizes 4-12mm, 4-20mm, and 4-32mm for precise hole cutting in metal, plastic, aluminium and wood
• TITANIUM COATING: Premium titanium-coated high-speed steel construction enhances durability and reduces friction during drilling operations
• STEP DESIGN: Graduated steps with clear size markings allow for drilling multiple hole diameters with a single bit, increasing efficiency
• HEXAGONAL SHANK: Quick-change hex shank design ensures secure fitting in power drills and prevents slipping during operation
• STORAGE SOLUTION: Includes a compact storage case with individual slots for each bit, ensuring organisation and protection when not in use

Warm Tips Pls cool down with water when working because of the high temperature,so that the validity period can last longer. The speed is advised to be 250-400 RPM/Min Cut through wood, sheet metal, steel and other surfaces thickness under 5mm. Length: 5 Step Bit: 4-12mm,Length: Approx. 6.7cm/ 2.64" 9 Step Bit: 4-20mm,Length: Approx. 7.4cm/ 2.91" 15 Step Bit: 4-32mm,Length: Approx. 10.2cm/ 4.02" The 3 Cutters Come in the Following Sizes: 5 Step Bit: 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm); 9 Step Bit: 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm); 15 Step Bit: 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm). Package included: 1 x Set of 3 pcs Titanium Drill Titanium Hss conical 4-12/20/32 mm (included a nylon carrying bag)