These are top level R-Torq (racing-torq) Fulcrum Cranksets, having the R, RS and RRS versions, with each also having a compact version.
The entry level R is perfect for intense and persistent use, typical of enthusiasts of high calibre even if not necessarily athletes and features: Campagnolo Ultra Torque system, for lightness, rigidity, simple assembly and maintenance. Cranks - multidirectional carbon fibre with structure in unidirectional carbon fibre. Chainrings - aluminium. Screws - steel. Toothing: 53/39 - 50/34. Lengths - 170 - 172.5 - 175 mm. Weight: 751 grams (including cups and bearings).
The top level Racing Torq RRS Double chainset features no compromise design: carbon technology CULT ceramic bearings and hardox chainrings - the ultimate upgrade for your 10 speed Shimano/SRAM or Campagnolo groupset. 170mm, 172.5mm or 175mm cranks. Compact (50/34) or Double (53/39) configuration. CULT Technology ceramic bearings. Suitable for the toughest and most extreme competitive use. Weight: 696g. 8 pick up points for super smooth shifting.