Here's what other sites are saying:
Black Diamond Alpine Touring Accessories Alpine Sole Block BD120400ENGRSM_1.
Simple and convenient slide-on two-bolt block system for heel and toe. Rubber lugged soles. Dynafit compatible. These will fit Factor, Method and Shiva boots pre-MX style.
- Black Diamond Equipment
Description of Black Diamond AT Sole BlocksBlack Diamonds AT Power Series ski boots come with Interchangeable Sole Blocks. Sole Blocks come in two sizes Small for size 25.5 and smaller boots and Large for size 26 and larger.AT Sole Blocks come stock on the Method and Shiva, are interchangeable on our AT Power Series boots and are Dynafit binding compatible.FeaturesInterchangeable sole blocks
- US Outdoor Store
So you originally bought your Black Diamond Freeride Power Series boots for touring only, but now that they've become your favorite boots, you want to step them into a set of DIN-compatible alpine bindings' No problem; just grab yourself a set of Black Diamond's Alpine Sole Blocks, swap them out for the stock blocks that came with your boots, and get on your merry way.
Increase the compatibility of your Black Diamond ski boots by sliding on the AT Sole Block. Attach it securely to your boot with the 4-bolt system. When the snow gets thin and the skis come off, rely on the traction provided by the rubber lugged soles with tech inserts. Compatible with 2012/2013 and earlier Black Diamond Factor and Shiva boots.
- Mountain Gear