Self priming pump drains bilge's crankcases. Kit includes two dipstick probes 1/4 dia. X 48 long and 5/16 dia. X 48 long; 1/2 dia. X 8' long clear hose; hand pump. Kit includes 3 sizes of extraction hoses, pump and hose fitting that connects to marine oil dipstick tube. NOT TO BE USED WITH GASOLINE.