• Heavy duty core drill adapter for 1-1/4" Unc thread male to sds plus shank
• Standard drill chuck adapter or core drill bit adapter will help you use your own standard drill bits with drill bits to grind drill bits
• Enhanced drilling efficiency: Improve the performance and precision of your core drill with this essential accessory
• Drill bit adapter for granite, concrete, glass, brick. Use your diamond core drill bits for granite or diamond hole saws for grinders with standard drill bits. Now you can use grinding, cutting and polishing tools with standard chuck shanks with our drill bit adapter
• It is made of industrial grade steel, high quality steel provides longer working life and stable base. Not easy to twist and break B0CYZFT9GK