From the manufacturer Trend Snappy 5-Piece Countersink & Drill Set for No4-No12 Gauge Screws, SNAP/CS/SET Pilot Holes & Countersinks in One Go. ALL-IN-ONE SET: This 5-piece set enables you to create pilot holes and countersinks in one go, ensuring faster, professional finishes.WIDE RANGE COMPATIBILITY: Perfect for No4 to No12 gauge screws. An indispensable addition to your woodworking tool collection.QUALITY MATERIALS: Countersinks made from heat-treated tool steel, paired with high-speed steel (HSS) drills, ensuring longevity and robust performance.ADJUSTABLE & VERSATILE: Adjust to accommodate different length screws. Produces 9.5mm and 12.7mm diameter counterbored holes, perfect for wood plugs.QUICK RELEASE SYSTEM: Comes with a 1/4 inch hex shank, compatible with the quick release system for seamless tool swapping. Achieve Professional Finishes with Pilot Holes and Countersinks Versatile Woodworking Set for No4 to No12 Screws Seamless Tool Swapping with Quick Release System Trend Pro Pocket Hole Jig Kit, PH/JIG/AK Trend Dual Column Pocket Hole Jig, PH/JIG Trend 3-in-1 Pocket Hole Jig Kit, PH/JIG/BK Trend Portable Twin Pocket Hole Jig, PH/JIG/C Trend Portable Single Pocket Hole Jig, PH/JIG/BS Trend Pocket Hole Screw Selection Pack, PH/SCW/PK1 Material Capability 12.7mm (1/2″) to 38mm (1-1/2″) 15.9mm (5/8″) to 38mm (1-1/2″) 12.7mm (1/2″) to 38mm (1-1/2″) 12.7mm (1/2″) to 38mm (1-1/2″) 12.7mm (1/2″) to 38mm (1-1/2″) Face Clamp Required Supplied Supplied ✓ ✓ ✓ Screws Included 100 100 50 50 10 850 Drill Bit Included 1 x HSS Drill Bit with Collar 1 x HSS Drill Bit with Collar 1 x HSS Drill Bit with Collar 1 x HSS Drill Bit with Collar 1 x HSS Drill Bit with Collar Square Drive Bit ✓ ✓ ✓ ✓ ✓ ✓ Trend Airshield Pro Full Faceshield, AIR/PRO Trend 8″ Diamond Sharpening Stone, DWS/CP8/FC Trend ½ Inch Router Bit Set, SET/SS9X1/2TC Trend EasyScribe Scribing Tool, E/SCRIBE Trend Orbital Sanding Discs, AB/150/40Z Trend Adjustable Routing Jig Guide, VARIJIG Explore The Trend Woodworking Range ✓ ✓ ✓ ✓ ✓ ✓