- Ideal Combo Set - 4 countersink drill bits size of Ø7/64”(3mm), 5/32”(4mm), 13/64”(5mm), 1/4”(6mm) ; 3 countersink bits with most commonly-used sizes of Ø6.35mm(1/4"), 9.5mm(3/8"), 12.7mm(1/2") and free hex key wrench. Come with a portable plastic case for easy, convenient storage;
Efficient Design - 2-spiral flute makes chip removing easily and efficient. All drill bits get a 5-edged chatter-free chamfer cutter pedestal design that makes the countersink precise and smooth;
- Removable & Adjustable - Perfect for wooden planks, fiberboard, particle board, plywood, plastic, PVC, and soft metals. The drilling depth of countersink drill bits is adjustable by screws with various lengths;
- Sophisticated Design - Extra straightening drill bit with exquisite countersink pedestal provides the user a method of drilling a countersink hole with 1-time drill process. Extra straightening drill bit makes the drill hole accurate and smooth, exquisite countersink pedestal creates proper countersink structure with efficient experience.
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