Check the listing for details. Crosman Mark MK I 1 Mark MK II 2 Pistol URETHANE Seal Kit Expl View Parts List. Condition: New. Listed at 8.55 USD. <img src="http://ti2.auctiva.com/web/aswCredit.gif" border="0"><br><a href="http://www.auctiva.com/?how=scLnk2" target="_blank"><img src="http://ti2.auctiva.com/images/sc1line2.gif" border="0"></a> Here is a reseal kit that is correct for the Crosman Mark I & Mark II CO2 pistols. It include the most common O-Rings that are needed to bring your pistol back to life. The kit includes: (1) Tube Cap/Piercing Knob Seal (White Urethane O-Ring) (1) Valve Body Seal (White Urethane O-Ring) (1) Piercing Pin Seal (White Urethane O-Ring) (2) Breech Bolt Seals (White Urethane O-Rings) (Slightly smaller one is for Mark II (.177 CAL) and the larger one is for Mark I (.22 CAL) These white urethane seals are widely regarded to be of the highest quality and most durable available for your CO2 application. (1) Exploded View With Part List For Mark I & Mark II - Clean 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>