Set 6x Punte Utensili Svasatore 1/4" Gambo Esagonale Lavello per Acciaio Metallo Legno cc
1/4″ hex shank countersinks are fine for a quick drill. They don't slip in drill chucks. You can make deep countersinks easily by setting the countersink's depth stop to allow the countersink to drill more deeply into the worksurface.