【Quick Release Nut】Grinder lock nut screws on or off with just gentle finger pressure. Knurled nuts keep the wheel tight. You do not have to find the special wrench you misplaced, then balance the grinder while you hold the lock button, and struggle with the wrench.
TOPBRAS ABRASIVOS VINHEDO Abrasivos de Alta Performance Experiência, Competência e Qualidade