Burgtec Shimano Direct Mount Thick Thin ChainringShimano Direct Mount thick thin chainring for maximum chain retention.Fits; M6100, M7100, M8100, M9100 cranksets.Tried and tested in MTB heaven, the Peak District.Keeps your chain on in the roughest of conditions.Colour Available: Burgtec Black, Race Red, Deep Blue, Purple Rain, Kash Bronze, Iron Bro Read More