Amazon.com: Thinvik Road Bike Clipless Pedal Convert to Flat Pedals,Universal Platform Pedal Adapters for Shimano SPD-SL System Pedal(Only Work on Shimano Road Bike Pedals) : Everything Else
Amazon.com : BUCKLOS Bike Platform Pedal Converter for Shimano SPD-SL, Universal Clipless Pedal Adapter for Regular Shoes : Sports & Outdoors
How to remove a SPD platform adapter from a pedal
2Pcs Bicycle Pedal Adapter Platform Cycling Aluminum Alloy Clipless for SPD | eBay
The Lab: TATZE ADD-FLAT Adapter Review | ENDURO Mountainbike Magazine
Review: Every cyclist should have Pocket Pedals' slip-on platform pedals - Bikerumor
MASSI Platform Adapter SPD, Black | Bikeinn
Sport Bicycle Pedal Platform Adapters | Shimano Spd Platform Adapter - 2pcs Durable - Aliexpress
Bike Clipless Platform Adapter Pedal Convert for Shimano SPD KEO Look PROMEND | eBay