9 PCS Countersink Drill Bit Set, DIY Woodworking Drill Bits

Key features

• COMPLETE BITS KIT1/8"×3/8", 9/64"×3/8", 5/32"×3/8", 11/64"×1/2", 3/16"×1/2". Matched with an adjustable depth stop collar, hex wrench and screwdriver bit with 1/4" hex shank, it supports one-step drilling and screw driving.
• PORTABLE STORAGE CASE All bits and accessories are placed in a sturdy storage case with independent compartments to keep tools organized, anti-collision and easy to carry. For smooth burr-free cutting edges, please run the drill at around 200 RPM low speed. This protective storage design effectively extends your drill bits’ service life for long-term woodworking use.
• DURABLE CARBIDE BITSCountersink cutters adopt TCT tungsten carbide tipped material, 30% sharper than ordinary carbon steel for chip-free clean 82° countersink holes. Paired with two-flute HSS M2 pilot bits, they resist bending and breaking to ensure stable drilling and long service life. The precision helical grinding design creates smooth counterbores, while the low-friction collar greatly reduces repeated abrasion during woodworking.
• WIDE MULTI-MATERIALVersatile drill bit set works perfectly on plywood, MDF, particle board, hardwood and aluminum. Ideal for pre-drilling pilot holes and recessed screw holes for furniture assembly, drawer slide mounting, deck building, cabinet fitting and home renovation. both professional carpentry jobs and daily DIY repair projects.
• PRECISE DEPTH CONTROLEquipped depth stop collar, it instantly stops rotation on wood ontact to prevent over-drilling, cutting surface wear by 90% and avoiding burn marks & scratches. The side-opening collar allows quick depth adjustment and bit replacement. With the included wrench, you can set drilling depth up to 1.3 inches and countersink depth 0–0.5 inches, delivering uniform flush screw holes for cabinet, shelf, hinge and furniture installation.

Free shipping included. 30-day hassle-free returns.