For pricechoose optionsSelect Option 1/4 BSF 1/4 BSP 1/4 UNF 1/4 Whitworth 1/8 BSP 3/8 BSF 3/8 UNF 5/16 BSF 5/16 UNF 6mm M10 x 1 M10 x 1.5 M8 x 1 M8 x 1.25 Quantity Add to Basket Straight hydraulic grease nipple. Manufactured from high quality steel, case hardened and plated ZN3 zinc and clear. Head forms conform to DIN 71412