The holder for 10 inch inline filter (will fit all our 10" inline filter) x 2.

Diameter roughly 5 cm

It has a small hole on the bottom for screw.

Made from durable plastic. I don't recommend to be put under the sunlight, might deteriorate over time.

Postage $2.5 (will put in envelope with $2 stamp, the 50 cents for ebay fees), thanks.....

Holder only, the cartridge is not included