High Quality Material: These grease fittings are made of high-strength zinc-plated steel. The galvanized steel is more durable and has better rust-resistance even under extreme environments. Application: Used for replacement of missing or damaged fittings in hydraulic grease lines. What You Get: Metric Sizes: M6 Straight, 45 and 90-Degree, M8 Straight, 45 and 90-Degree, M10 Straight, 45 and 90-Degree, 168pcs, 9 Kinds of Common Specifications. Handy Packing: This grease fitting kit comes with transparent storage cases with lable, keep your parts clean and organized. It's easy to pick, saves your time of running around looking for a particular size. Satisfaction Guarantee: We strive to provide you with best quaility product and customer experience as possible. Any questions, please contact us directly. Metric Grease Nipple Assortment Kit, Hydraulic Grease Fittings Standard