Features ALLOY STEEL --- These drill converters are made of excellent alloy steel with high hardness, impact resistance and wear resistance. STANDARD SIZE --- These core drill adapters are standard size and not easy to loosen when installed on tools, with good stability. FINE WORKMANSHIP --- With exquisite workmanship, these drill adapters have a shiny appearance, without burrs or gaps, ensuring safe use. APPLICABLE TOOLS --- Tap adapter Can be used together with M14 female thread core drill, hole saw, profiling wheel, cup grinding wheel and other tools. SPECIFICATIONS --- Includes 2 thread converters, convert M10 taps to M14 or convert M14 taps to M10 threads. Specification: Item Type: Drill Bit Adapter Material: Alloy Steel Specification: M10 to M14, M14 to M10 Package List:2 x Drill Bit Adapter Package List 2 x Drill Bit Thread Converter