Shimano ultegra 6600 10 speed road bike chainaccurately machined and constructed to get the absolute best performance from your road bikes shimano 10 speed drivetrain, the ultegra 6600 chain adopts shimanos hyperglide hg technology for smoother and faster shifting. Despite its low weight of 280g, this chain is highly durable thanks to its heat treated plates, rollers and pins. The pins also have a chromising treatment and have been machine pressed to increase the chains strength under load.features speed 10 speed links 114 use road compatibility shimano sram 10 speed road bike drivetrains adjustable yes joining pin included yes quick link included no hyperglide hg technology has chamfered inner plates to optimise shifting performance on hg sprockets durability enhanced by chromising treatment on link pins, and heat treated rollers, pins and plates machine pressing of the pins gives unsurpassed side plate retention, enabling the chain to far exceed the bs iso standard for breaking force 5.88mm chain width, optimised for 10 speed supernarrow hg drivetrains zinc alloy silver finish on outer plates and grey finish on inner plates increase corrosion resistance manufacturer's part number cn6600114i weight 280ga 2 year warranty is offered with all shimano products from chain reaction cycles 3 years on dura ace and xtr products.buy shimano components from chain reaction cycles, the world's largest online bike store.