Features: Universal 5/8-11 threaded angles grinder extensions with high strengthes metal construction ensure compatibility across power tool brands while doubling service life compared to standard steel adapter. Tool release installation enables rapid 30second setups with multiple length combinations for enhancing maneuverability in confined workspaces. Ideal for professional contractors, DIY enthusiasts, and home workshop users requiring reliable accessory connection for practical cutting, grinding, or polishing tasks. Perfect for automotive detailing in tight engine compartments or construction sites demanding quick tool changes between cutting disc and sanding attachments. accuracy engineered extensions maintain secure threaded connection during vibrations intensive operations, reducing slippage risks in industrial workshops and metal fabrication projects. Specifications: Material: Metal Parameters: American thread 5/8-11 Size: 50mm/1.96inches, 70mm/2.75inches, 100mm/3.93inches, 140mm,5.51inches Type:4Pcs Set Package Includes: 4Pcs 5/8-11 Thread Angles Grinder Extension Adapter Set note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.