Natural (Off-White), or Black Nylon Sew-In Tail Slides. Sewn onto curtains, with heads inserted into curtain track. 50/bag. Compatible with RECMAR 3108, 3110, 3290, 3292, 3294, and 3296 curtain tracks. Also fits many boat curtain tracks and RV curtain tracks. Also comes attached to nylon webbing for easier positioning when sewing - 3089 Sew-In Tailslide Tape.