Empire® 27059 Magnetic Clean Sweep, Adjustable Magnetic Head, Aluminum Shaft Extend Up to 40 in Brand_Architectural Mailboxes Shockwave Impact Duty Step Bits Shockwave Impact Duty Step Bits are engineered to deliver the most durable and fastest impact step bit hole drilling solution The all metal frame offers superior durability and protects accuracy while maintaining lightweight performance for easy transport on and off the site The Empire® 40 in black and silver adjustable magnetic clean sweep feature a rolling design and an adjustable head The clean sweep has an aluminum shaft that can be extended to 40 in adjustable angle 11 1 2 in magnetic head provides more coverage