Milwaukee 12PC QUIK-LOK™ BiM Hole Saw Kit includes the innovative QUIK-LOK™ Arbor System, which delivers the fastest hole saw changes and a universal fit, all organized neatly in a PACKOUT™ Storage Organizer. This system features pre-assembled adapters on every hole saw size, eliminating the need for multiple arbors and saving you valuable time. The threaded adapter design also allows for hole enlargement with Large Thread Pin Adapters. Designed with ALL-ACCESS SLOTS, this kit an effective solution for easy plug removal, reducing downtime between holes and increasing productivity. The proprietary slot design enhances pilot bit visibility for precise placement and faster chip ejection, helping the hole saw cut cooler for longer periods. Crafted with a durable tooth design, the HOLE DOZER™ Bi-Metal Hole Saws provide the longest life in the industry and come backed by a Lifetime Tooth Break Warranty. These hole saws are versatile and capable of handling general-purpose applications including metal, aluminum, drywall, wood, and wood with nails. Proudly made in the USA, this kit is built to meet the demands of professionals and DIY enthusiasts alike. Model Number: 49-22-4702