4PCS Countersink Drill Bit Set: Carbide countersink drill bit set for wood includes 4 High Speed Steel (HSS) M2 Drill Bit Tapered Heads in sizes of 1/9x1/3inch(2.8x8mm), 1/8x1/3inch(3.2x8mm), 1/7x2/5inch(3.5x10mm), 1/6x2/5inch(4x10mm), 82 countersink and 1/4-inch hex shanks for secure clamping and universal compatibility with most drills, it's the top countersink drills for wood Depth Adjustable: The depth of both the pilot drill and the countersink can be adjusted with a wrench to adjust the depth limiter and bit for precise drilling. The added plastic collar reduces surface abrasion. Sharp & Durable: M2 HSS counter sink drill bit for wood with spiral chipformer ensures fast cutting; sharp steel alloy cutting edge produces smooth countersinks and countersunk holes, perfect for installing 82 degree imperial (US) standard screws. Widely Usage: The counter sink bit is suitable for processing natural wood, manufactured lumber, plywood, particle board, drywall, MDF, decking and a variety of plastic boards. For best results and smooth edges, the counter sink bits for woodwork operate the countersink at a low speed of approximately 200 rpm. Compact & Convenient: Our countersink bits for wood come with carrying case which contains 4PCS countersunk drill bits, an extra plastic free-spinning ring, an Hex wrench, only about 8.5ounces/240g weight, so it's easy to carry anywhere. The wood drill bit set is designed with hanging holes to allow you to hang it freely. Colour:As Shown Material:Metal Package Contents: 4 * Countersink Drill Bit Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.