Liquid Silicone Lubricant is essential to keeping your foosball rods clean and maintained for the best foosball game experience, A fresh coat of silicone will keep your rods clean and help attain maximum lubrication to glide smoothly through the bearing ,It prevents the bearings from scraping on the rods, which leaves black marks that alter the appearance of your foosball, and causes wear on the bearings. Using lubricant prevents frequent replacing of bearings, saving you money in the long run. Silicone is to be used sparingly and only in well ventilated areas.