Stalwart 75-2225 Hawk O Ring Assortment Set, 225 Quality O-Rings Orings Organized-by-size see-thru case 225 sized and organized quality rubber o-rings for the cost of just a handful at the store! Perfect for plumbing, mechanical and automotive repair Re-sealable carry case makes it easy to identify sizes and keeps it organized Includes 18 of the most-commonly used sized rings