Shimano Direct Mount thick thin chainring for maximum chain retention. Fits 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 Orange, Rhodium Silver, Burgtec Bullion Gold, Toxic Barbie Pink