Features Grease Nipple Made of qualified metal material, high hardness, rust-resistance, oil spill proof, ensures a long service time,high strength, high cost performance. Grease Nipple Different sizes and types grease fittings for different needs. Comes with a plastic case for easy storage,More professional and practical. A pack of 60 grease nipple fitting assortment kit, which is used to feed lubricant into a bearing. These commonly used zerks very suitable for many most automotive, motorcycle, truck, farm, and industrial applications,Widely use. Specification: Material: Iron nickel plating Weight: 298g/10.5oz Specifications Length M6*1 / Straight 12cm/4.7inch M8*1 / Straight 14cm/5.1inch M10*1 / Straight 18cm/7.1inch Package List: 20 * M6*1 Straight Grease Nipple   20 * M8*1 Straight Grease Nipple                  20 * M10*1 Straight Grease Nipple                                 1 * Grease Gun Flat Mouth Package List