Features SPECIFICATIONS: Including 2pcs drill bit adapters, convert M10 thread drill bits to M14, or convert M14 thread drill bits to M10 thread. APPLICABLE TOOLS: Can be used together with M14 female thread coring drill, hole saw, profiling wheel, cup grinding wheel and other tools. ALLOY STEEL: These drill bit converters are made of excellent alloy steel, with high hardness, impact resistance, and wear resistance. STANDARD SIZE: These thread converters have standard size, and not easily detached when installed on tools, with good stability. FINE PROCESSING: With exquisite workmanship, these adapters have a glossy appearance, without burrs or gaps, ensuring safe use. 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