ITEM NAME:250 Pack M8 Brass Zerk Straight and 180 Degree Grease Zerk Nipple Fittings Description: - High Quality Grease Zerk Fittings. - Zinc Coated Iron Material Resists Rust and Corrosion. Package Quantity: 180 Degree 250pcs, M8*1 Specification. - For easy transport, safe storage, and quick organization. - Used for restoration and replacing missing or broken grease zerks on your machinery. Specification: - Material: Iron Size Chart: Length: Approx. 17mm/0.71inch Diameter: Approx. 8mm/0.35inch Package Included: 250 Pieces Straight Metric Grease Zerk Nipple Fitting Note: Please allow 0.1-0.5 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making.High Quality Grease Zerk Fittings. - Used for restoration and replacing missing or broken grease zerks on your machinery. - For easy transport, safe storage, and quick organization. Length: Approx.