Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world The GRX series offers premium performance at an incredible value, with thoughtful ergonomic designs and gravel-centric gearing for all manners of unpaved adventures. Unmatched comfort and control for mixed-terrain riding and racing The SHIMANO GRX DUAL CONTROL LEVER delivers light and responsive shifting for mixed-terrain riding. The textured hood and anti-slip brake lever surface increase control on bumpy terrain. Features: -Greater control on mixed terrain Gravel-specific lever and bracket ergonomics -Anti-slip coating on brake lever - Product Specifications: - Model No.: ST-RX610 - Series: GRX 12-speed - Colour: Series colour - Average weight: 610 g (per pair) - Bracket cover colour: standard - Shifter type: dual control lever Shift lever: - Rear speed: 12. Front speed: 2 - Cable: ot-sp41 (lever side), ot-rs900 (rear derailleur side) - Inner cable: Optislick Brake lever: - Brake hose (kit): sm-bh90-jk-ssr - Hose joint**: straight - Brake hose colour (kit): black - Recommended brake caliper: br-rx400 - Oil: Shimano mineral - Reach adjust - Funnel bleeding - Free stroke adjust Clamp band: Diameter (mm): 23.8-24.2 Genuine, brand new, boxed Shimano product - Biketart are an official UK Shimano stockist.