Shimano zee bh90 disc brake hosepremium replacement zee m640 resin coated hydraulic brake hose features stiff reinforced hose that performs under pressure keeping your brakes sharp 21mm bore diameter for excellent brake performance and response straight hoseconnection at lever to banjo at caliper 1000cmm length easily cuttable to fit comes complete with cutting tool guide olive and inserta 2 year warranty is offered with all shimano products from chain reaction cycles 3 years on dura ac