This set includes 15 sets of double front hooks and eyes, interlining, and also adds a "stretchy front hook and eye." The stretchy front hook and eye is new and unused, but has been opened to check if the spring works. It has been stored for a long time. I no longer make small items, so I'm offering it to someone who will use it. Stretchy Front Hook and Eye - Quantity: 1 set - Stretch: Approximately 2cm Double Front Hook and Eye - Quantity: 15 sets of 25mm width - Material: Brass Interlining (non-adhesive) - Color: White - Width: Approximately 3.0cm The sides are slightly yellowed. The length is unknown. Thank you for looking.