Shimano GRX FC-RX600 2x Gravel ChainsetShimano GRX FC RX600 2x Gravel Chainset As part of Shimanos gravel groupset, the GRX 600 Double Chainset offers high strength, low weight and excellent shifting in all conditions. The 46 30T chainrings provide great ratios for use off road whether that is on steep climbs or fast fire roads, and it is compatible with GRX drivetrains and HollowTech II style bottom brackets. Durable aluminium crank arms and chainrings keep the weight down whilst the