Red King Crab Claws L5

The bigger the crab, the tastier it is. The 1kg package contains juicy meat of the nmerus. The meat has a fibrous structure, a delicate sweet taste. Boiled limbs should preferably be served in sliced form. You can add the chopped pulp to salads, side dishes, soups and other haute cuisine dishes.
What does the letter L and the numbers 2,3,4,5 mean in the name of the crab?

Producer: Russian Federation, Magadan
Packaging: 1 kg, cardboard box 40 × 26 × 10.5 cm
Storage conditions: 180 days at temperature of -18. Do not re-freeze

Nutritional value/100 g:
Protein 22 g
Fat 2 g
Carbohydrates 1 g
Energy 80 kcal