These Heavy Duty Lever Grease Gun are designed for use in industrial applications. Provided with both a 6" steel extension and 12" flexible extension with spring to protect and prevent crimping of hose. Also includes variable stroke lever action for greater control. Grease Gun with rubber Sleeve for non-Slip, Durable Zinc Alloy Head with Bleeder Valve. Deliver up to 10,000psi / 690 bar. Capacity: 600 cc with bulk fill. Suitable for use with 450gram cartridges or bulk grease.