Drill Adapter: The shank of the SDS MAX Drill Chuck Conversion Tool will fit any SDS Max Demolition Hammersl, no matter which manufacturer's drill hammer, and the rotary hammer drill will work with any SDS plus drill 40 Chrome Steel Material: This SDS Max to SDS Plus Adapter is constructed of premium chrome steel, with a dense structure, strong hardness, durability, and not easy to break Special Treatment: In addition to heat treatment, this SDS Max to SDS plus adapter is also sandblasted and anti corrosion oil treated, for outstanding reliability, performance and durability Firm Connection: The adapter snaps into place quickly and easily, securely holds SDS-plus drills of all sizes, and is easy to insert and remove Lightweight and Portable: Small and easy to carry, you just need to put it in your bag. Item Type: Drill Adapter Function: Adapter Chuck Adapter Chuck Head Diameter: 1in Adapter Chuck Hole Diameter: 10mm / 0.4in SDS Max to SDS Plus Adapter Colour:black Material:40cr steel Package Contents: 1 x Drill Adapter