Drill Adapter: The SDS MAX Drill Chuck Conversion Tool fits any SDS Max demolition hammer, regardless of manufacturer, and allows the hammer drill to work with any SDS plus drill bit. 40 Chrome Steel Material: This SDS Max to SDS Plus Adapter is made of high-quality chrome steel, offering a dense structure, high hardness, durability, and resistance to breaking. Special Treatment: In addition to heat treatment, this SDS Max to SDS Plus adapter features sandblasting and anti-corrosion oil treatment for enhanced reliability, performance, and longevity. Firm Connection: The adapter quickly and easily snaps into place, securely holding SDS-plus drills of all sizes, with smooth insertion and removal. Compact and Portable: Small and lightweight, it can be conveniently stored in your tool bag. Item Type: Drill Adapter Function: Adapter Chuck Adapter Chuck Head Diameter: 1 inch Adapter Chuck Hole Diameter: 10mm / 0.4 inch SDS Max to SDS Plus Adapter Color: Black Material: 40Cr steel Package Contents: 1 x Drill Adapter Note: Light reflection and different displays may cause slight variations in color between the image and the actual item. Measurement error allowed is +/- 1-3 cm.