Replacement coolant sponge for the 3/4" and 1" Standard BitSerts and the SwapTop BitSert.
4.6
17 ratings
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Grinder sponge
These sponges are made to fit perfectly and distribute water evenly, really seems to minimizing messy water over spray and the price is so affordable I bought several !
J
Jeanette · September 28, 2026
Love These Things!
They last a long time and its so satisfying to see them expand for the first time haha
G
Grizzly · January 27, 2026
A little large.
The space in the bitsert is fairly small and the sponges are too large when wet. When it’s time to replace the one my new grinder came with, I will be cutting it down before I get it wet.