Enhanced Tool Compatibility Converts SDS Max drill bits to SDS Plus bits, increasing versatility for handling tasks and eliminating the need for additional drill bits. Universal Fit for SDS Max Tools Compatible with standard SDS Max drill bits from trusted brands such as Bosch, Makita, Milwaukee and Hilti; check compatibility for fit. Effortless Setup Installs quickly on any SDS Max rotary hammer; holds SDS Plus bits firmly for safe operation; reduces setup time. Rust Resistant Constructed of high quality 40CR steel; treated for maximum strength and rust resistance; designed for tough use. Use scenarios - Swap between SDS Max power and SDS Plus precision to drill smaller holes in concrete or masonry without changing tools. - Retrofit or renovation projects that require both large hammering capability and SDS Plus bit access for precise placements in walls or ceilings. - On busy job sites, standardize on a single adapter to reduce tool inventory and simplify setup and operation.