General description The Faithfull HSS taper drill bit set is designed for drilling sheet materials, allowing you to create holes of varying diameters between the specified sizes. This set includes three high-speed steel (HSS) taper drills, making it a versatile addition to your toolkit. Technical specifications Material: High Speed Steel (HSS) Sizes included: 1 x 4-12mm, 1 x 6-20mm, 1 x 16-30mm Other information Supplied in a metal storage case Use of cutting fluid is advisable for optimal performance