SENQCIA Inspire Series™ SBR® cottered type British Standard connecting links are manufactured in Japan in accordance with the ISO 606B International roller chain standard. They offer exceptional performance and long life in a wide variety applications. Split cotters are supplied with slip fit closing plates for ease of assembly in the field. Closing plates are flat style to improve fatigue strength. Connecting links are used to connect the ends of the roller chain strand into an endless loop. Each connecting link is individually packaged in a sealed plastic bag. SENQCIA Inspire Series™ SBR® Connecting Link, British Standard Single Strand Cotter Pin, 20B Chain, 1-1/4 in Pitch, 1.73 in Overall Width, 0.4 in Pin Dia, 1.039 in Link Plate Height, 0.177 in Inner/0.138 in Outer Link Plate Thickness, Carbon Steel