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 premium chrome steel, featuring a dense structure, high hardness, durability, and resistance to breakage Special Treatment: In addition to heat treatment, this SDS Max to SDS Plus adapter undergoes sandblasting and anti-corrosion oil treatment for enhanced reliability, performance, and longevity Firm Connection: The adapter quickly and easily snaps into place, securely holds SDS-plus drills of all sizes, and allows for easy insertion and removal Compact and Portable: Small and lightweight, it can be conveniently carried in a tool bag Item Type: Drill Adapter Function: Adapter Chuck Adapter Chuck Head Diameter: 1 in Adapter Chuck Hole Diameter: 10 mm / 0.4 in 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 the color of the item in the picture to appear slightly different from the actual item. Measurement may vary by +/- 1-3 cm