This auction is for:

Six (6) breech bolt o-ring seals, in .177 cal.,  part #1101. 
These will fit the QB78, QB79, QB78 Deluxe TH78, XS78
& other variants of the .177 cal. "78" model based rifles. 

It is best to carefully examine & replace any questionable
seals whenever the gun is disassembled for cleaning,
tuning, or modifications.

Please contact me if you have any questions.

Thank you