Porcelynne White Nylon Coated Metal Replacement Bra Strap Slide Hook - 5/8" (16mm) Opening - 10 Pairs (20 Pieces) White Nylon Coated Metal hardware. Used on bra straps, tank top straps and headbands. Accommodates 5/8" wide elastic. Replacement hardware for straps. Matching hardware also available by Porcelynne