Surly MDS Chips 12mm Thru-Axle Dropout Alloy Shimano Direct mount hanger Pair 

Surly MDS Chips: 12mm Thru-Axle Dropout Alloy Shimano Direct mount hanger Pair . Surly MDS Dropouts chips. Made of cast and machined 6061-T6 aluminum or stainless steel and available in multiple configurations.