Heavy duty drive chain from the worldās leading chain manufacturer. 136 Links 420 Size RJ Type Chain Features: Pre-lubricated at factory, ensuring low friction and maximum durability Proven high tensile strength ā See product information Solid bushes for enhanced distortion resistance from repetitive shock loading Hard Chromium Carbide Layer for increased strength and durability RJ clip/split type connecting link. Its cover-plate is designed for a slip fit on to the pins to enable easy installation. Product may vary from image