The 7124 Button Carrier provides a ring below the track that accepts most varieties of curtain hooks. Excellent choice for pinch pleat curtains. Can also be sewn onto curtains directly. Compatible with RECMAR 32124, 42124, and 52124 curtain tracks, and 84003 and 84004 ball bearing carrier curtain tracks as well. These carriers are strong. 14/bag. Dimensions: Head Diameter & Body Width .43 in, Neck Diameter .17 in, Length .72 in., Diameter of loop opening .16 in.