When you add toe clips and straps to your pedals, it unbalances the weight distribution and points your pedal perpendicular to the ground.
If you’re using MKS' Sylvan Touring, Stream, BM-7 or one of many other double-sided pedals you now have to attempt to spin your pedals level enough to insert your shoe (while riding) using a flat surface, which can be challenging.
The Spin II attaches (with bolts) to the rear of your double-sided pedal to add a flip tab. After installed simply drag your toe backwards across the part of the pedal pointing up and the Spin-2 will flip the pedal into the proper horizontal position.
