SALI 2PCS Core Drill Bit Adapter 5/8"-11 Thread Male to 3/8" Triangle Shank 5/8" -11 Male Drill Bit Adapter for Threaded Diamond Hole Saw Diamond Core Drill

Additional Details from the Manufacturer

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More features

• Heavy duty core drill adapte for 5/8-11 thread to straight 3/8" triangle shank. Core drill adapter converts 5/8" - 11 thread to 1/2" straight 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 and drill bits. Attaches to 5/8"-11 internal thread tools, core drill bits, hole saws - makes them 1/4" Shank as a drill shank adapter
• Heavy duty - anti-twist alloy - most diamond core masonry drill bits, tile drill bits, stone polishing kits, granite polishing kits, diamond polishing pads, diamond cup wheels, drill bit sharpening stones and back holders are 5/8" - 11 thread core drill adapter
• 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