Non-Coated Sponges are a basic (core), open-cell piece of foam. These sponges do not feature a cleanable surface and are not resistant to fluid absorption.
Stealth Sponges are designed with proprietary "flared" angles to offer significantly reduced artifacts during viewing. Flared sides will increase overall size.
Non-Stealth Sponges are formed with traditional angles and do not feature our proprietary "flared" angles to offer significantly reduced artifacts during viewing. Non-stealth (or non-flared) sides may show artifacts when imaging, specifically when coating is applied.
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