FastenMaster FMTHR008-24 ThruLOK Screw Bolt Fastening System, 8 Inches, 24-Count, Silver Product Description Fasten master thrulok, 24 piece, 8", no pre-drilling bolt, replaces a through bolted connection, installs with an 18V cordless drill, no drill bits or wrenches required, galvanized coating meets irc ACQ corrosion requirement.. From the Manufacturer Meet code and lower installed costs! FastenMaster?s ThruLOK Screw Bolt Fastening System replaces 1/2 inch carriage or through-bolts without predrilling. ThruLOK installs quickly with an 18 volt cordless drill and doesn?t require special bits or wrenches. The three part kit assembly includes a ThruLOK fastener featuring the patent pending Paddle Point, engineered washer, and LOK-Nut. No need to count out bolts, nuts, and washers. The product?s galvanized coating meets current IRC ACQ corrosion requirements and is guaranteed for the life of the project. ThruLOK is also a code compliant replacement for 1/2 inch carriage or through-bolts. This fastener comes in specific lengths to tackle primary deck applications. Installation instructions and code documentation are included in each box. ThruLOK products are manufactured in specific lengths to tackle primary deck applications. The 8 inch fastener is used for double 2x to single 4x decking posts. Features Manufactured in United states Easy to use Highly durable Replaces 1/2 inch carriage or through-bolts without predrilling Installs with an 18 volt cordless drill No special bits or wrenches needed Meets all corrosion requirements and is guaranteed for the life of the project Code compliant fastening method with current code documentation 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.