Picture of the design. Each horn is printed and finished by hand.
Shop / Replacement parts
Rear cap and hardware
The bolted cap at the back of each chamber.
$22
A replacement rear cap for one chime chamber, in black PETG, or the set of six bolts and nuts that hold it on.
Compressed air only, and very loud. Read the Safety notice and the owner's manual before you connect it. No pressure rating is stated.