An adapter is required to use the SDS-Plus drill bit on the SDS-Max electric hammer Adapter/connect SDS-Max to SDS-Plus-small size, easy to carry Unit weight: 521 grams. Material: Chrome vanadium steel/CR-V/. Corrosion-resistant SDS-Max to SDS-Plus tool holder adapter. Long service life-very strong, solid 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 drill bits also good resistance to abrasion Applications: construction, concrete slabs, carpentry, interior and exterior design, renovation projects, masonry, domestic and industrial applications Uses: recommended on jackhammers Use adapter / jackhammer