Crafted from sturdy 45 # steel with anti coating, these generic male / female adapters ensures long time across standard water drills and hole punching machines Ideal for professional contractors, construction crews, and craft enthusiasts requiring frequent drill bit swaps during demanding projects Perfect for high intensity drilling operations in construction sites, plumbing installations, or home renovations where rapid tool adaptation is critical Upgrade your drilling efficiency with these quick releases water drill connectors, featuring a aligned accuracy design for effortless bit changes and eliminating stubborn traditional disassembly struggles The compact 70x29.9mm ( male) and 80x45mm ( female) dimensions optimize workspaces efficiency while maintaining robust waterproof protections at connection points, Manufacturer: HENYGEN