Product Description Fasten master, 12 Pack, 2.5", Timberlok Heavy Duty Wood Screw, Head Stamped For Easy Code Inspection, Unique Tapered Head Countersinks Easily Into Wood. ACQ Approved, Blister Pack. From the Manufacturer Save time, money, and labor costs. TimberLOK's sharp point and aggressive threads penetrate the densest woods without predrilling and provide stronger shear values than 3/8 inch galvanized lag screws. TimberLOK's unique countersinking head design is perfect for your next wood-to-wood project, whether it be deck framing, fencing, or any post to beam connections. It’s also perfect for replacing galvanized spikes in raised flower beds, landscaping, or retaining walls. No need to predrill and sledge a spike. TimberLOK just zips right in. Each pack size contains a free 5/6 inch driver bit. TimberLOK fasteners are American made.