Universal Valve Adjustment Tool Set

Features:
Set includes 10mm, 12mm, 13mm, 1/2" & 9/16" Valve Adjustment Tools.
For use on a wide variety of cars with 10mm, 12mm, 13mm, 1/2" and 9/16" jam nut valve adjustment screws.
Allows technician to see the position of the screwdriver blade holding the adjustment screw as the jam nut is tightened.
Allows for quicker valve adjustment time because technicians can hold adjustment screw exactly where they wants it.
Unique handle pivots from side to side, so the window is always visible.
Comfortable grip handle.
Made of heat treated chrome vanadium steel.