Photos were taken using an original strap, but due to the lighting and computer display, a slight colour variations might be inevitable. Please understand. The Fluororubber strap about 35g. And regular rubber about 20g. The Fluororubber Strap more flexible than regular silicone. The Fluororubber Oil resistance, chemical resistance, radiation resistance, and weather aging resistance. Package: 1 PCS 28X24 Grey Fluororubber Strap 2 PCS 27.5mm Screw links as your order choosed. 1 PCS Screwdriver Tool For 28mm watch lug size, 24mm Tang buckle lug size Just strap and screwdriver tool.