50-Piece Black 3/5" Metal Rotating Frame Knobs with Screws for Hanging Pictures, Photos, Drawings, and Posters

[DIMENSIONS]: 0.67" (17mm) long, 0.24" (6mm) wide, 0.02" (0.5mm) thick; mounting hole diameter: 3mm/0.12"

[APPLICATION]: Widely used for hanging pictures, photos, drawings, and posters.

[EASY TO INSTALL]: No need to drill holes, simply use screws to tighten the knob onto the picture frame. Mounting screws are included.

[NOTE]: When tightening the screw, it must be perpendicular to the frame surface.

[MATERIAL]: Made of high-quality metal with an electrolytic finish, corrosion-resistant, and wear-resistant.