Have this Thrulok 7 in. Screw Bolt Fastening System delivered to your job site. Installs with an 18-Volt cordless drill. No special bits or wrenches needed. Meets all corrosion requirements guaranteed for life of the project. Code compliant fastening method with current code documentation. Installation/code bulletins included in each box. Manufactured in specific lengths to tackle primary deck applications: 7 in. fastener – notched 6x carrying beams.