TimberTech TOPLoc® Fascia Drill Bit is specially designed for use with TOPLoc™ Fascia Fasteners, providing an efficient solution to overdrive and countersink fascia fastener holes in a single step. This innovative feature helps significantly reduce oil-canning, ensuring a smooth and professional finish. The drill bit is compatible with all TimberTech PRO and TimberTech EDGE boards, making it a versatile tool for various fascia applications. While it is not necessary for installing TimberTech AZEK PVC Fascia, it is highly for predrilling capped composite fascia boards from the PRO and EDGE collections. Additionally, it can be used with Legacy uncapped composite boards, such as TwinFascia, to enhance installation quality and durability. Model Number: TLOCFASBIT