10 pack of MINI-RECEIVER WAX GUARDS for click domes Receiver-In-Canal (RIC) Pure, Carat, and Centra-Life Siemens models. Siemens and the Hearing Aid Battery Club recommend you follow the instructions included with these replacement filters. We also recommend you consult a hearing aid professional if you have any doubts as to the size thin tube, dome tip, or wax filter required for your hearing aid. The Hearing Aid Battery Club only offers original products from the manufacturer. Thank you for your patronage. Mini-Receiver Wax Guards for Siemens Hearing Aids