[Compatibility] This product can seamlessly adapt 1-1/4inch-7 male thread to SDS Max shank, convenient and easy to connect coring drill bits for efficient drilling. [Easy to Use] This core drill bit connect converter adopts user-friendly design and easy to use, simplifying your drilling process. It is designed for easy connection to smooth and efficient operation. [Safe Connection] This adapter adopts secure and stable connection and you can rest that your drilling tasks be performed safely. [Steel Material] This 1-1/4inch-7 male to SDS max shank adapter relies on premium hardened steel construction for enduring and , ensuring long-term stable performance. [For Rotary Mode] This product is customized for use in rotary mode, which prioritizes safety and performance by avoiding hammer mode to protect your tools and workpieces., Manufacturer: Akfldms