we supply grease nipple(grease fitting)metric size:M6X1,M8X1,M8X1.25,M10X1.5,M12X1,M12X1.2,M12X2,M14X2,etc
inch size:1/4",G3/8",R1/8",5/16,UNF,NPT,BSP,SEA, US
the degree:30DGE,45DEG,67.5DGE.180DGE
we can make it depend on this buyer's sampels or drawing.