Quality Material: Crafted from sturdy steel, this Core Drill Bit Adapter ensures long-lasting performance and reliability in various applicationsPrecised Thread Conversion: Core Drill Adapter is designed to convert M16/M22 threads to 1-1/4-7, making it versatile 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 setupImproved Drilling Precision: Enhance the accuracy and efficiency of your drilling operations with this essential core bit adapterVersatile Application: Ideal for use in industrial settings or DIY projects where specific thread conversions are required, providing flexibility and convenienceSize Chart:8.5cm/3.35inchPackage Includes:1pc M16 to1-1/4"-7Core Drill Adapteror1pc M22 to1-1/4"-7Core Drill Adapter with 3pcs Rod