EK 520 QX-Ring Clip Link EK Chain – DEX X-Ring Series One of the best value for money chains on the market Extra reinforced DEX series chains are equipped with patented Quadra X-rings Quadra X-ring (QX-Ring) design reduces weight and friction on the chain. Manufacturing and material used by Enuma give this chain a higher breaking load compared to most other brands. Comes with SKJ clip link Manufactured in Japan Chain cutting / rivetting may be required Check product title for chain pitch, length and colour.