This invaluable kit contains commonly used o-rings, seals, screws, springs & parts used in most Spyders including the Xtra, Sonix, Victor, Pilot, TL, MR1 and many electronic models. Will also fit in many Spyder clones. Includes cup seal, screws, o-rings, seals, Allen wrenches and more! All parts meet or exceed factory specs. In a handy multi-compartment storage box. Don"t get caught without the necessary parts to fix your gun! Note: Not all parts will fit every model. You should replace the seals, o-rings and springs on your marker at least once per season to maintain peak performance.