The four-pack is really convenient because it means I have spares ready to swap in whenever the current stone gets grimy. They sit securely in the base and don't wobble at all, which my old setup definitely did.
Jason★★★★★
These stones fit perfectly and the matte finish actually hides water spots, keeping the holder looking clean much longer. I bought the 4-pack so I won’t have to think about replacing them for a while.
Emily★★★★★
I was tired of the old stones getting grimy, but these replacements slide right in and keep the brush draining perfectly. The four-pack means I won't have to worry about running out for a good while—really glad I grabbed these.