2 driver bits in each bit pack Features a built-in shoulder which automatically sets the depth of drive for maximum holding power For use with solid, non-grooved deck boards; driver bits for grooved deck boards can be purchased separately 3 inches in length Features a T15 star drive Drill speed setting of 2,500 RPM is recommended CAMO Edge Deck Screws should be used with a CAMO driver bit The CAMO Edge Deck Fastening System is engineered to work exclusively together; using other branded tools or guides, fasteners or bits will impair performance and not produce the desired results