Remove and install valve core in the charged system,R410A R22 systems includedReplace Leaking valve cores quickly and easilyWork on service Schrader valve cores of booth 1/4 inch and 5/16 inch service portsDurable, solid brass tool has a ball valve that can be opened or closed in just a quart-turnSolid Forged Brass/Steel construction designed solid and to lastFeatures:Suitable for the crowd: or professionals and do-it-your-self handy men alikeAbout this itemWork with: easy connect with 1/4 or 5/16 R22 or R410a systems yes, dual sizeGreat function: The valve core remover installer tool is made of pure copper; The metal knob is all designed with anti-slip design; The schrader's core grabber tool make it be easily inserted into the inner valve core to control the core. No need to stop the machine, no need to release the refrigerant, the dual size 1/4&5/16 can adapt to R22/R134/R410/R32 Rair-condition, external bypass port design can remover valve cores.Ball value handle, metal schrader cap, schrader's core grabber tool, built-in magnet at the bottom base.Color: goldMaterial: copperLength: 117mmNote: Please close the valve and disconnect the air conditioner before removing the valve core.Package included:5 set x 1/4 inch & 5/16 inch SAE Valve Core remover and install toolOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.