7 Pcs M2 Countersink Drill Bit Set, 3In1 Wood Pilot Countersink, Allen Wrench Product Details Set of 7 Countersink Drill bit Set, 3in1Woodworking Countersink Counterbore Drill Bits Specifications: For Drilling #4 #6 #8 #10 #12 Screws Holes With Adjustable Depth Stop, 1/4? Quick Release Hex Shank, Sizes: 5/64?, 3/32?, 7/64?, 1/8?, 9/64? Include?2-Allen Wrench Functions? To have the head of the screw below thesurface then conceal it with matching wood plugs To have the head of the screw fit flushwith the surface Compatibilities: The high quality M2 pilot drill bits areprecisely ground. It is detachable. You can move it up and down in thecountersink/counterbore sleeve to adjust drill depth to meet multi screwlengths. The cutting angle of the 3 countersinkchamfer cutters is 82 degrees, perfect for popular screw heads. The counterbore is 3/8? in diameter, 1/2?in full depth. They will meet your needs from flush countersinking to a full1/2" of counterbore for dowel buttons or plugs. Reference Chart? Size 5/64 (2mm) for #4 Screw Size 3/32 (2.5mm) for #6 Screw Size 7/64 (2.8mm) for #8 Screw Size 1/8 (3.2mm) for #10 Screw Size 1/8 (3.2mm) for #10 Screw Size 9/64 (3.5mm) for #12 Screw Size 9/64 (3.5mm) for #12 Screw For softwood, we recommend you to use adrill one size smaller than the screw calls for. Easier Faster ? 3 in1 Drill Countersink and Counterbore in one step, with this 7 Pcs M2 Countersink Set you can get perfect counterbored holes for #4 #6 #8 #10 #10 #12 #12 screws without changing bits Meet All the Needs ? with popular 82 Degrees Countersink and 3/8? Counterbore Bits - You can either have the head of the screw below the surface then conceal it with matching wood plugs, or fit flush with the surface Cutting Depth Adjustable ? You may need holes for long or short screws; these counterbore Drill Bits with Adjustable Depth Stop to fit the length of your screws; just tighten the pilot drill bit with the hex key (included) to the Countersink / Counterbore sleeve Fit Most Tools ? 1/4" hex shank design compatible with most quick-change chuck machines or power drills; Includes 7 pieces of Drill/Countersink/Counterbore 3in1 bits in sizes 5/64?, 3/32?, 7/64?, 1/8?, 1/8?, 9/64? 9/64?? For Hardwood Softwood - The HSS M2 Grade countersink drill bit perform well in softwood or hardwood and serve the needs of most woodworkers; when drilling softwood, please use the one size smaller bit Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.