Features 1、[Five Specifications] The step bit set includes five specifications of step bits, which can replace 50 individual bits to meet different needs. 2、[Titanium Plating and Suitable Materials] This step bit has titanium plating and is suitable for easily cutting steel plate, stainless steel, iron, aluminum, copper, plastic, wood or many other types of sheet metal. 3、[Center Punch] Automatic center punch is made of cemented carbide drill bit with high impact resistance. Before drilling, the automatic center punch can be marking the positioning hole to prevent the drill bit and screw from slipping. 4、[Triangular Shank and Straight Flute] Our pagoda step drill has a triangular shank and straight flute design, which allows you to use it with less effort. 5、[Sturdy and Durable] Our step drill bits are easy to use overall, sturdy and pressure resistant, and can be made to stay stable while in use. Specification Item Type: Titanium Plated Imperial Pagoda Drill Bit Material: High Speed Steel, Alloy Size: 10 Steps: 3/8in 12 Steps: 3/8in 13 Steps: 1/4in 9 Steps: 3/8in 6 Steps: 1/4in Use: Pagoda Drill Is Suitable For Industrial Or Home Decoration Use Package List 5 x Step Drill Bit 1 x Center Punch 1 x Aluminium Box