OverviewPREMIUM MATERIAL This Countersink Drill Bit Set is carefully crafted from 45 Carbon Steel alloy bit and robust highspeed steel to ensure maximum hardness and durability Its exceptional cutting ability gives you a flawless operation every time COMPLETE SIZE RANGE This set features 5 distinct sizes 28 x 10mm 76438 30 x 10mm 1512838 32 x 10mm 18 38 35 x 10mm 964 38 and 40 x 10mm 532 38 Added to this are 5 pilot drill bits and a versatile 10mm hole opener for woodworking applications requiring different hole sizes HIGHLY ADJUSTABLE Armed with 5 countersink drill bits of varying sizes 5 spare pilot bits and 2 hex wrenches this set allows for easy adjustment of the countersunk drill bit set and various screw lengths This level of flexibility makes the set apt for a multitude of DIY tasks VERSATILE APPLICATIONS This drill set is your goto solution for multiple woodworking projects From softwood hardwood fiberboard and plywood to plastic and PVC this set effortlessly handles them all Remember this set is not suitable for steel boards or metallic surfaces UTILITY ADDITION IN TOOL BOX Whether you are working on fine furniture cabinetry or general carpentry tasks this countersink drill bit set is designed to provide a clean smooth countersink in a variety of materials including wood plastic and even metal making it a versatile addition to any tool box