This is a 100 piece assortment, metric, 6 millimeter x 1, 8 millimeter x 1, 10 millimeter x 1 grease fitting. It also includes easy-out 4-way grease fitting tool for installing new straight and angle-type fittings, re-threading holes and removing broken fittings. sturdy, easy to handle transparent dispenser box with illustrated compartments. These fittings have a ball check in the head to prevent dirt and grit from getting into the fitting, heavier wall thickness for extra strength, are zinc plated with a yellow passivated finish for maximum protection against corrosion, and have a stress relieved and tempered carbon steel spring. It includes two installation / removal tools and fits LX-3301 (30 piece), LX-3303 (15 piece), LX-3305 (15 piece), LX-3307 (10 piece), LX-3309 (5 piece), LX-3311 (5 piece), LX-3313 (10 piece), LX-3315 (5 piece), LX-3317 (5 piece), LX-1428 (1 piece), LX-1426 (1 piece). Every fitting is individually inspected and batch tested to 5, 000 PSI and are designed to meet the demanding requirements of most automotive, agricultural, industrial, marine, truck, federal, and construction equipment needs. Lumax's mission is to provide professionals and consumers with innovative and high-quality products to get the job done right. Product development at Lumax goes beyond the physical product, to a deeper understanding of the end-users' needs. Engineered with the "user-in-mind, " Lumax products are built to the highest standards and incorporate many unique features that make work easier, faster and cost-effective. We have a passion for the design process. We listen to our customers and their ever-expanding requirements. Our unique products lead the field in design, quality, and performance.