Jet Ski RIB Kit Part Number: IRN-NUR-JSRK1 The RIB Kit inflatable gives/adds positive buoyancy to the Personal Water craft and changes the ski to a virtually unsinkable craft. The RIB Kit will fit almost all personal watercraft skis. -Activity in High Surf Ocean Conditions by Towing Assistance or Surf Rescue. -In/Out valve: Charge valves