Maccari (Air Rifle Headquarters) tune items

I have the following brand new items made by Jim Maccari for sale. These are new and unused. Maccari's springer tune parts are the best on the planet. All prices are plus postage. Payment via EMT.

Hornet seals .. the best seals made .. fit Weihrauch HW80 or HW90 - only one left $20 ea.
 

Monolith high power spring made by Jim Maccari for Diana 48/52. These are stout springs that use .143" wire to produce big power from heavier pellets. Can probably be used in other high-power springers like the HW80, Air Arms Pro Elite, etc. with the proper spring guide and spacing. - only one left $20 ea