The patented SCRAIL® ROOFLOC® System was developed to install metal roofing, siding, and interior liner panel quickly and efficiently. Eight times faster than traditional screws and two times faster than collated screws. This performance could only be achieved by the combination of the pneumatic FASCO® Roofing Installation Tool and the SCRAIL® ROOFLOC® fasteners. Decreases time installing screws. Eliminates the need to pre-drill eliminating metal shavings and pigtails. Creates a better watertight seal than traditional screws.