Reddit reviews SHIMANO SM-SH40 Cleat Adaptor 3-Bolt to 2-Bolt
We found 2 Reddit comments about SHIMANO SM-SH40 Cleat Adaptor 3-Bolt to 2-Bolt. Here are the top ones, ranked by their Reddit score.
Clipless Cleats
We found 2 Reddit comments about SHIMANO SM-SH40 Cleat Adaptor 3-Bolt to 2-Bolt. Here are the top ones, ranked by their Reddit score.
http://www.amazon.com/Shimano-SM-SH40-Adaptor-3-Bolt-2-Bolt/dp/B004QEWMXY
Yes, you want them. 3-bolt road shoes do not have any tread on the bottom to walk on and protect the small metal SPD cleat. This is alright for 3-bolt cleats because they're big, wide, plastic and usually have rubber grippers on the parts that touch the ground when walking. Metal SPD cleats don't. You'll slip and fall on the first slick surface trying to walk on them. That's what this plate is for.
Here is the walking adapter thing.
MMurkie is right though, OP. You bought road shoes. They are technically compatible with SPD cleats, but they won't have the 'walkability' of MTB shoes.