1.4 jaws grease gun coupler accessory 2.material:steel 3.type:hexagon 4.4 ... 5.length:46mm the specification of the 4 jaws grease gun coupler accessory is described as follows: PROPERTY 1materialsteel2colourwhite,silver3typehexagon,4jaws4length46mm5threadfemale ... of grease zerk is popular to many kinds of hydraulic lubrication,cars,big trucks,agricultural machinery,big machine17 we offer all ...