Rajeev Metal Industries offers Suction Grease Guns. Rajeev Metal Industries is an ISO 9001: 2000 certified company. The Suction Grease Guns are available as Model No. G- 516. These are rugged transfer guns designed for use with gear oil to get them both in and out of the gear box. They need no priming and has a mat black powder coated barrel with chrome plated steel end caps. These Suction Grease Guns are supplied with 12 inch flexible vinyl hose along with the capacity of 16oz.