Sander No.4 Wooden Air Stone (5601)

These Limewood air-stones from Sander produce a very fine bubble, with voluminous amount of air to aid in the proper functioning of a Protein skimmer.

Sander No.1 : 3.5cm x 1.7cm

Sander No. 2 :

Sander No.4 : 8.7cm x 3cm