Phillips Flat Head Masonry Screw Assortment in Plastic Case (160-Pieces)

Concrete Screws Tap Threads Into A Predrilled Hole In Concrete, Brick Or Block. The Threads Are Hardened To Cut The Base Material. The Threads Are Created With A Special Design That Allows For Removal Of The Dust That Is Created While Cutting The Threads.|Pre-drilling requires concrete drill bit (not included)|Kit includes 160-pieces of the following Phillips flat head masonry screws: 3/16 x 1-1/4 in. 15-pieces 3/16 x 1-3/4 in. 15-pieces 3/16 x 2-1/4 in. 15-pieces 3/16 x 2-3/4 in. 15-pieces 3/16 x 3-1/4 in. 10-pieces 3/16 x 3-3/4 in. 10-pieces 1/4 x 1-1/4 in. 15-pieces 1/4 x 1-3/4 in. 15-pieces 1/4 x 2-1/4 in. 15-pieces 1/4 x 2-3/4 in. 15-pieces 1/4 x 3-1/4 in. 10-pieces 1/4 x 3-3/4 in. 10-pieces|Phillips driver bit required|Corrosion-resistance and long-lasting performance due to special blue coating|Clear plastic carrying case for easy storage