This listing is for:

Two (2) basic O-Ring seal kits, for the Crosman
models 150 & 157 CO2 pistols.

Ten (10) seals are included in this kit:

Two (2) tube cap, URETHANE o-ring seals.
Two (2) piercing body, (front) o-ring seals.
Two (2) exhaust valve, o-ring seals.
Two (2) bolt, o-ring seals.
Two (2) extra bolt, o-ring seals.
One (1) exploded view with E-Z seal Id guide

Urethane offers superior strength, tear and
abrasion resistance.

Important Information: Both .177 & .22 bolts (on
the four guns listed above) use the same size (Crosman
#130-033) o-ring seals, this is easy enough to verify by
looking at the part numbers on original EVPs, and by
comparing the dept and width of the 0-ring grooves
on original bolts. 

Please contact me if you have any questions.

Thank you.