INCLUDES ONE PISTON SEAL AND ONE BREECH SEAL TO SUIT ALMOST ALL NORICA MODELS SCREW IS NOT INCLUDED AND CAN BE PURCHASED HERE SEPARATELY. PISTON SEAL SUITS THE FOLLOWING: MOD 56, SPORT, SHOOTER, QUICK, KRONO, DRAGON, TITAN BASIC, DREAM HUNTER, DRAGON BASIC ATLANTIC, STAR GOLD, WEST, MARVIC, DRAGON, QUICK, COMMANDO, MOD 73, JET, MARVIC, TWIN, MOD 83, CA-92, CA-61, AND WEBLEY SPORT MAY ALSO FIT MARKSMAN 45 AND 0035 BEEMAN GT600 AND ANY OTHER BEEMAN RIFLE MADE BY NORICA THAT USES THIS TYPE OF SEAL. AND ANY OTHER NORICA THAT REQUIRES A 26MM SCREW IN SEAL QUALITY PRECISION MOULDED THIS SEAL WILL PROVIDE A LONG LASTING AIR TIGHT SEAL BREECH SEAL A LEAKING BREECH SEAL CAN DECREASE AIR RIFLE POWER TOP QUALITY NBR O RING 7mm INTERNAL DIAMETER O RING WILL SUIT THE FOLLOWING: NORICA: MOD 56, KRONO, SHOOTER, SPORT, DRAGON, ATLANTIC BASIC, DRAGON BASIC AND TITAN BASIC. WEBLEY: WEBLEY SPORT ASI: SUPERMATCH GAMO: MC SUPER MC CONTEST