LESOLEIL HSS Step Drill Bits Set, Cone Cutter with Hex Shank Titanium Coating 3Pcs (3-12/4-20/4-32mm) for Wood, Metal, Stainless Steel, Sheet Metal-Gold by Amazon.co.uk

• HSS steel manufactured - Coated with titanium to reduce friction and heat, Home and General Building / Engineering

• Double cutting blades and hexagonal cutting edges Shaft - Ensure a faster and smoother cut. Prevent slipping in the chuck

• Size - 4-12 mm length: approx. 6.8cm / 2.67in, 4-20 mm length: approx. 7.5cm / 2.95in, 4-32 mm length: approx. 10.5 cm / 4.13in

• Clean and precise - The drillings are very advantageous because you only need one drill for different hole sizes. From 4 to 22 mm everything is possible

• DIY or General Construction - For do-it-yourselfers and general building supervision; For cutting holes in materials such as stainless steel, wood, thin iron/copper, aluminium, PVC, wood, plastic, etc