... zinc plated available size:m6*1,m8*1,m10*1,m12*1,m14*1 shape:straight,angle hydraulic type GREASE NIPPLE/GREASE FITTING Material:iron/mild steel ... ,stainless steel,brass/copper Metric size:M6*1, M8*1, M10*1, M12*1, M14*1, M16*1 Inch size:1/2", 1/4", 1 ...