FastenMaster FMTLOK04-50 TimberLOK Heavy-Duty Wood Screw, 4 Inches, 50-Count, Product Description Fasten master, 50 pack, 4 inch timberlok screw, no pre-drilling, timberlok drives right through pressure treated wood reduces labor time with quick safe 1 step installation. boxed. 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. Features Manufactured in china Easy to use Highly durable Nationally code compliant IBC/IRC ESR #1078 Head-stamped for easy code inspection Unique tapered head countersinks easily into wood Guaranteed corrosion resistance for the life of the project ACQ approved USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.