An adapter is required to use the SDS-Plus drill bit on the SDS-Max electric hammer. SDS-Max adapter/connection to SDS-Plus - Compact, easy to carry. Material: Chrome vanadium steel/CR-V. Corrosion-resistant SDS-Max to SDS-Plus tool holder adapter. Long service life: Very robust, strong, and efficient. The adapter is ideal for masonry and construction work. Converters/Accessories: Designed for fast work with drilling and assembly tools of different sizes. Self-locking, 30% increased productivity when changing bits - good abrasion resistance. Applications: Construction, concrete slabs, carpentry, interior and exterior design, renovation, masonry, domestic and industrial applications. Uses: Recommended on jackhammers. Use an adapter / jackhammer