Chrome-plated and powder-coated carbon steel for corrosion resistance. Releases and tensions serpentine belt tensioners in confined, very tight spaces. Long-reach 585mm handle and 220mm extension. Includes extra-shallow 15, 16 and 18mm sockets and 13, 14 and 15mm crows foot spanners. Chrome-plated and powder-coated carbon steel for corrosion resistance. Releases and tensions serpentine belt tensioners in confined, very tight spaces. Long-reach 585mm handle and 220mm extension. Includes extra-shallow 15, 16 and 18mm sockets and 13, 14 and 15mm crows foot spanners.