PRECISE COMPATIBILITY: This adapter set seamlessly connects 5/8"-11 male threads and 1-1/4"-7 UNC male threads to SDS Plus arbors, enhancing the versatility of your drilling equipment by allowing the use of various core drill bits for diverse applications. DURABLE CONSTRUCTION: Crafted from high-quality hardened steel with an electrophoresis treatment, this core drill bit adapter boasts superior corrosion resistance and durability. Its robust build ensures long-term, stable performance under rigorous use. SECURE AND STABLE CONNECTION: Engineered for optimal performance, this adapter provides a secure and stable connection with diamond core drill bits. It enhances tool efficiency, ensuring safe and reliable drilling operations without the risk of slippage. EASY TO USE: Designed for user convenience, this core drill bit adapter facilitates quick and easy connections, making your drilling tasks smoother and more efficient. Its straightforward design allows for hassle-free setup, saving time and effort. WARM TIPS: For optimal performance and safety, use these adapters in rotary mode only. Avoid hammer mode to protect your tools and workpieces, ensuring a focus on safety and maintaining the integrity of your equipment. Color: As Shown Material: Metal Package Contents: 2*Concrete Core Bit Adapter