the shimano road acer constitute a kit cable and compressionless professional for road bikes. like any other shimano product, this has as a guarantee the experience gained since 1921 of the most famous manufacturer of cycling components. it includes 1 1700 mm with cover 4 mm sp41 cable and 2 wires of 2100 mm and 1.2 mm in diameter with ptfe coating. in addition, they incorporate a grease of silicone on the inside to decrease 10% friction and increase the speed and effectiveness of change. features: -cable and compressionless kit. -for road bikes. -made from stainless steel. -1700 mm cable with cover of 2 cables of 2100 mm and 4 mm sp41 -2 wire from 2100 mm and 1.2 mm in diameter with ptfe coating. -grease silicone on the inside for a 10% decrease friction and increase the speed and effectiveness of change. -finish: black.