The Milwaukee 49-22-4105 Master Electrician's Hole Dozer Hole Saw Kit is engineered to deliver superior durability and productivity for professional applications. This 19-piece set features robust bi-metal construction with 23% cobalt, providing increased wear resistance and extending the life of the teeth in tough materials. The hole saws are designed with an optimized tooth form that ensures faster cutting speeds and cleaner holes in nail-embedded wood, metal, and plastics. To maximize job site efficiency, each saw is equipped with functional Plug Jack slots, an all-access design that allows for fast and easy plug removal to reduce downtime between cuts. This comprehensive kit offers the performance, versatility, and reliability demanded by master electricians.