Oxidized valve screwdriver

Single oxidized screwdriver for spring inserts. Single screwdriver for the inserts of any standard car valve.. Plastic handle fits comfortably in hand. The oxidized part will not rust. . Dismantling the spring insert from the valves (valves) is necessary when inflating the wheel. Each valve (valve) has an insert already screwed in. After assembling the wheel, before pumping, the spring insert should be unscrewed to facilitate pumping and to avoid damaging the insert with the momentum of compressed air. Screw the insert back into the valve after reaching the required pressure in the wheel and equalize the pressure with the gun..