SDS to keyless chuck adapter?
While someone has already linked to the adapter, for occasional use why not just clamp the SDS in the chuck? If you plan to do even a medium sized project, get a proper SDS drill. Besides small holes, these little hammer drills will be frustrating. My Bosch SDS cuts through brick, block, concrete like butter - like drilling into pine, even for 3/4" holes 14" deep. And you can use the chisels to break up concrete and tile. This is a well respected - and huge bang for your buck - model. I paid over $200 for mine five years ago and love it.