Rajeev Metal Industries manufactures Iron Head Grease Guns Fitted with Hex Nut. Rajeev Metal Industries is an ISO 9001: 2000 certified company. Iron Head Grease Guns Fitted with Hex Nut is manufactured as `Model No G-507`. These are suitable for use of 14 oz grease cartridge or 400 gm bulk fill and possess knurled barrel for easy grip. The air can be released by half turn of the head assembly. It produces pressure 10000 psi and consists of threads which are available in sizes 1/8BSPT, 1/8NPT or M10.