1/2" x 16mm x 3/8" Wrench

• 15mm and 16mm ends are 6-point hex
• Designed to release the tension on spring-loaded idler pulleys
• Heat treated and nickel chrome plated for durability, appearance, and long tool life
• Slim head design

This allows direct access to the tensioner without having to remove engine accessories or frame components. The ratcheting wheels allows quick and easy positioning of the wrench driving end to allow the user to access the tensioner from any angle. This can be done by rotating the drive end on the wrench to match the position of the serpentine belt tensioner. Also it's slim head design allows access to tight areas found in the tensioner area on some front wheel drive vehicles.