Check the listing for details. Crosman Mark I Mark II MK 1 2 - TWO (2) Seal Reseal Kit Kits - Guide & Expl View. Condition: New. Listed at 5.45 USD. Here are two (2) reseal kits that are correct for the Crosman Mark I & Mark II CO2 pistols. Included are the most common O-Rings that are needed to bring your pistol back to life. Included are: (2) Tube Cap/Piercing Knob Seals (O-Ring) (2) Valve Body Seals (O-Ring) (2) Piercing Pin Seals (O-Ring) (4) Breech Bolt Seals (O-Ring) (Smaller ones are for Mark II (.177 CAL) and the larger ones are for Mark I (.22 CAL) (1) Exploded View With Part Numbers For Mark I & Mark II - Clean, Printed Hard COPY (1) Seal Identification Guide (Identifies each seal, it's part number and where it is utilized) Thank You. <div><a href="http://mostpopular.sellathon.com/?id=AC1316716"><img src="http://www.sellathon.com/Resources/Images/countercredit.gif" border="0"></a></div>