Abstract: The paint brush comprises a handle having a male half and a female half with housing receptacle walls and interior partitions with serrated edges of smaller height than the lateral walls. A projecting member protrudes from the housing receptacle of the female half having a bottom opening next to it. A guide is provided in the female half, and a stem with a hook-like nose on a free end thereof projects from the male half. The replaceable applicator part with at least one retention ringlet is held by support and anchorage device. The male half has guide lugs which cooperate with the guide so that when the handle is closed, the hook-like nose passes by and adjacent the projecting member and through the opening in the female half.