Случайно нашел интересную ссылку, посвященную совместимости обуви с разными типами шипов.
http://www.wiggle.co.uk/HTM/shoecompatibility.htm
Green: Look, Time Impact, SPD-SL, Speedplay, Look Keo and Delta
Red: SPD, Time Atac, Speedplay Frog and Crank Brothers Egg Beater systems
Blue: SPD-R only
The above diagram shows the 3 most common cleat patterns, the highlighted dots in Green are referred to as 3 bolts Look fitment, the Red are known as 2 bolt SPD fitment and Blue dots are SPD-R fitment only.
These are the 3 most used terms but they will fit other pedal types. Green will fit Time Impact, SPD-SL, Speedplay, Look Keo and Delta. Red will fit SPD, Time Atac, Speedplay Frog and Crank Brothers Egg Beater systems. The Blue will only accept SPD-R pedal types.