Spokey MARIN pump tip set: are 5 steel, replaceable needle adapters for pumps, is designed for many types of balls, mattresses and tires, fits pumps with replaceable needles. The Spokey MARIN Pump Replacement Kit is a practical set of five steel needles that every fan of cycling or scootering, team sports like soccer and volleyball, and camping enthusiasts should have on hand. With it, you can easily inflate any ball, tire, or mattress! Five interchangeable pump tips If you already have a bike pump, consider accessories that will turn it into a useful tool for inflating most inflatables and sports products. The needles have a standard diameter and thread, making them incredibly practical! This set of five adapters is made of durable and long-lasting steel. It's a must-have for trips, camping, or cycling. Parameters material: steel standard diameter and thread