Shimano road disc brake pads steel backedthe shimano k04s steel backed pads are suitable replacements for br rs805 and br rs505 disc brake calipers they feature a sintered pad for excellent braking in both wet and dry conditions these pads feature a steel backing plate they are sold as a pair to suit either front or rear calipers features works with br rs805 and br rs505 calipers steel backing plate sintered compound genuine replacement parta 2 year warranty is offered with all shimano pro