https://www.cyclesetsports.com/en/cables-lifeline-gear-brake-pads-disq-brake-pads/12914-shimano-sil-tec-road-brake-cables-set.html
Shimano SIL-TEC road brake cables set CYCLES ET SPORTS
SHIMANO Shimano SIL-TEC technology combines a polymer coating and a series of small tubes that wrap the cable.
road brake cablesshimanosiltecset