Review on Efficiently Install & Remove Serpentine Belts With OEMTOOLS 25149 Tool: 13-18Mm Sockets, 1/2 & 3/8 Inch Drive, Long Handle For Optimal Leverage! by Jeff Olson

The head that inserts into the tension pulley quickly twisted under the load of the pulley's tension spring. Very weak metal used in this tool. Dangerous to use this weak tool. Anyone who has worked with a spring loaded idler pulley knows, it is under a lot of tension. Return window is closed, so wanted to ensure others do not waste their money, or worse.get hurt.