Use this product for stitching sinusoidal rooflight to rooflight, sheet to rooflight and for fixing to other fragile materials.
8mm (5/16") standard hexagon washer head fastener.
Use a purpose made screwgun for installation. Cordless drivers and drill drivers are ideal with torque set on a medium setting and in driver mode. Please note: Impact drivers should not be used under any circumstance and automatically voids any warranties.