Adjustable Extension, For Use With Hand Operated Grease Guns, Size 8 1/2 in, Connection 1/8 in MNPT, Max. Pressure 3,500 psi, Min. Burst Pressure 3,500 psi, Working Pressure 3,500 psi, Material Steel, Features Provided 360 Degrees Rotation of The Grease Coupler for Accessing Fittings In Hard to Reach Areas, Includes Swivel End WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer, and Di-isodecyl phthalate (DIDP), which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. -