2-in-1 Complete Drilling Solution – 7-Piece HSS Countersink Drill Bit Set for Wood+ 12-Piece Tungsten Carbide Eccentric Masonry Drill Bit Set for Concrete, Tile

Upgrade your workshop with this all-in-one drill bit bundle. The 7-piece countersink set (HSS M2, auto‑stop aluminum collar) delivers flawless flush screw holes in wood without tear‑out. The 12-piece carbide eccentric set (4‑blade serrated tip, anti‑walking design) powers through concrete, tile, glass, and plastic with ease.

• [Upgraded Aluminum Stop Collar] - The upgraded aluminum stop collar comes with built-in bearings that can immediately stop drilling when wood comes into contact. Compared to those traditional stop collars, the wear and tear has been greatly reduced.
• [7-Piece Set in Storage Case] - Countersink drill bit set for wood comes with 5 HSS M2 tapered bits (1/8" x 3/8", 9/64" x 3/8", 5/32" x 3/8", 11/64" x 1/2", 3/16" x 1/2"), 1 screwdriver bit, and 1 wrench. All stored neatly in a dedicated box. Warm reminder: Drilling vertically and minimizing wobble helps extend the life of your drill bit.
• [Extreme Hardness & Durability] Our tile drill bits are made from premium tungsten carbide alloy, a material known for its superior hardness among drill bits. Featuring sharp serrated edges, they are built to deliver a service life far exceeding that of ordinary steel bits, even under the most demanding applications.
• [Precision Eccentric Design] Our eccentric flute design features a 4-blade serrated tip that bites into the surface upon contact. This effectively prevents the frustrating "walking" and skidding of traditional bits, allowing you to start precise holes on slick porcelain tile and glass in seconds.