Check the listing for details. Captain O-Ring - FX Dreamline (.177/.22/.25/.30) Complete 56 Piece O-Ring.... Condition: New. Listed at 38.19 USD. Captain O-Ring - FX Dreamline (.177/.22/.25/.30) Complete 56 Piece O-Ring Rebuild Kit Product Features: Includes all o-rings needed to completely rebuild your FX Dreamline (56 total o-rings) Compatible with .177, .22, .25, .30 caliber FX Dreamline Air Rifles. Captain O-Ring's printable o-ring replacement guide makes replacing your o-rings easier than ever. Manufactured and warrantied by Captain O-Ring LLC Get your FX Dreamline back in order with Captain O-Ring's O-Ring Rebuild Kit. Contains all of the o-rings needed to rebuild your gun. Compatible with .177, .22, .25, and .30 caliber models. Kit contains 56 o-rings to cover everything within the gun. Perfect for replacing failed o-rings or having spares on hand for when a seal fails, rendering your air gun useless until the o-ring is replaced.