The Perrin Nuts set consists of 6 pieces of different sizes. Below are the head dimensions of each piece both side (open and closed) and front.
The lenght of all models is about 25/26 cm (10 inches).
1) "XS" size (yellow handle)
2) "S" size (orange handle)
3) "M" size (green handle)
4) "L" size (blue handle)
5) "XL" size (red handle)
6) "XXL" size (black handle)
Set of 6 Mechanical Nuts (actives) Perrin 
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