Quality Material: Crafted from sturdy steel, this Core Drill Bit Adapter ensures long-lasting performance and reliability in arious applicationsPrecised Thread Conersion: Core Drill Adapter is designed to conert M16/M22 threads to 1-1/4-7, making it ersatile for different threading needs and compatible a wide range of equipmentCompact Size: With a length of 85mm, this Thread Adapter for Diamond Drill Core Bits is compact yet efficient, allowing for easy installation and integration into your existing setupImproed Drilling Precision: Enhance the accuracy and efficiency of your drilling operations with this essential core bit adapterersatile Application: Ideal for use in industrial settings or DIY projects where specific thread conersions are required, proiding flexibility and conenienceSize Chart:8.5cm/3.35inchPackage Includes:1pc M16 to1-1/4"-7Core Drill Adapteror1pc M22 to1-1/4"-7Core Drill Adapter with 3pcs RodNote:Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.