Simpson ADMX2PL SDS MAX to SDS Plus Drill Bit Shank Adaptor Fiber Cement Siding Nails plywood and wood substitute materials in plywood and wood substitute materials in applications exposed to harsh marine or many chemically caustic conditions Fastening: Install Strong Drive SDCF Timber CF screws at a 45° angle through the pre aligned fastener tabs The Simpson Strong Tie® ADMX2PL drill bit shank adaptor is designed to allow larger rotohammers to use smaller SDS MAX bits and SDS plus bits This adaptor maximizes drill bit versatility without the need for multiple rotohammers and it pairs with various types of rotohammers