Shimano ultegra 6703 silver triple 10sp chainset ultegra hollowtech ii chainset offers a fine balance of light weight and rigidity with incredible shifting performance hollowtech ii allows the bottom bracket bearings not included to be spaced wider apart outboard the frame enabling the use of larger bearings and an increased axle diameter there is also the benefit of easier installation adjustment and maintenance features the hollowtech ii 10 speed ultegra chainset offers an ideal balan