General description High quality professional adapter designed for durability and solid performance. This SDS Max to SDS Plus Fast Chuck Drill Adapter allows the use of any SDS Plus drill bit, including the largest SDS hammer drill bits, with all standard SDS Max drill bits. Technical specifications Material: Chrome 40 steel Length: 22.5 cm Inner diameter: 0.9 cm Outer diameter: 2.5 cm Compatibility and accessories Compatible with Bosch, Hilti, Makita, and all other standard SDS Max drills Package includes: 1 adapter converter