The shimano deore bh90 straight connection cuttable hydraulic brake hose is a stiff reinforced hose that performs under pressure keeping your brakes sharp there is a 21mm bore diameter for excellent brake performance and response and straight hose to calliper connection easily cuttable to fit this hose comes complete with cutting tool olive and insert and has a 100cm length for the front brake and 170cm for rear brake this is a premium replacement resin coated hydraulic brake hose