SM-SH41 Pontoons Adapter for SPD – Sports Basement
Amazon.com : 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 - Converting Adapters
Mount SPD Cleats on Road Bike Shoes Using SPD Cleat Adapters - YouTube
HOW TO USE SM-SH41 CLEAT ADAPTERS | RIDE SHIMANO – Ride Shimano
Venzo Bicycle Compatible with Shimano SPD Adapter - Using MTB Type SPD Cleats on Road or Spin