Bontrager Road Shoe SPD Pedal Adapter - Trek Bikes (GB)
Shimano Sm-sh40 SPD Cleats Adapter for Road Shoes Smsh40 for sale online | eBay
CyclingDeal Bicycle Shoes Cleats Adapters - for MTB Shoes to Use with Cleats of Road Bike Pedals - Compatible with Shimano SPD-SL, Look KEO & Look Delta - ONLY Converting Adapters :