Blue Boar 1-1/8" (29mm) Stucco-Wood & FRP / fiberglass Tungsten Carbide Tipped TCT Hole Saw with 7/16" shank (M16 Thread), 5/16" (8mm) carbide pilot bit, and ejection spring Single bit is engineered to bore holes in both wood and stucco Hard and durable RA90 TCT tungsten carbide tipped cutting teeth 2" cutting depth for thick stucco, metal siding over OSB and thick plaster & lath Ejection spring for easy removal of the cut plug Works with any " corded or cordless hand drill