This Trend CraftPro Quick Release Countersink Bit Set is a time-saving solution for pilot and countersink operations, allowing you to complete both tasks with a single action. The set includes five HSS drill bits with sizes ranging from 2.0mm to 3.6mm, all easily adjustable to suit different material thicknesses. The countersink ensures a neat, sub-flush finish for screws, and the quick-release 1/4" hex shanks are compatible with quick-change drills and impact drivers. Made with a Tool Steel (WS) body and High Speed Steel (HSS) drill bit for enhanced durability and longevity, this set is suitable for use with timber, ply, MDF, and chipboard. It can also be used to counterbore deeper holes for plugs, providing professional and consistent results every time. The set includes five HSS drill bits (2.0mm, 2.4mm, 2.8mm, 3.2mm, and 3.6mm).