Performance Tool W1187 Flex Shaft Carburetor Adjuster 11 1/2" flexible shaft. 4 tips: 4.5mm and 1/4" & Hex Socket Sizes: 4.5mm & 1/4" Hex sockets: Double D socket and 3/32" hex bit. Applications include most GM vehicles and 1.7 to 2.2L Chrysler 1978 to present. Tips store in handle or plastic boot.