Amazon.com : Thinvik Clipless Pedal Adapter for Shimano SPD Pedal - Clip Pedal Convert to Universal Platform Pedal - (Only Work on MTB Bike Pedal : Sports & Outdoors
Promend USA Road Bike Clipless Pedals Platform Adapter for Shimano SPD KEO Look | eBay
PROMEND Road Bike Self-locking Clipless Pedal Adapter for Shimano SPD KEO Look | eBay
Amazon.com: PP Pedal Plate | SL | Adapter Compatible with Shimano SPD-SL Clipless Pedals | Converts Clipless into Flat Pedals | No Cleats Needed | Adding Grip and Comfort
The Lab: TATZE ADD-FLAT Adapter Review | ENDURO Mountainbike Magazine
SHIMANO BIKE PEDALS SM-PD22 MTB ADAPTER FOR BICKCYE PEDAL PD-M520 M540 M780 M980 CLEAT