These filters are the Cerustop filters direct from Phonak.
These are the 3rd generation wax traps.
Direct Phonak replacement for the discontinued Wax Trap 2''s

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 2 inch
Height : 0.3 inch
Length : 2 inch

Item Weight: 0.96 ounce (View shipping rates and policies)
Shipping Weight: 0.96 ounce (View shipping rates and policies)

ASIN : B007J6HJTI