Silicone pads

They are identified by a series of numbers.

The first digit corresponds to a marking shape and size.

The second number corresponds to its hardness: 5 = 5 shores A, 0 = 0 shores A, 10 = 10 shores A

The third number corresponds to the quality of the silicone: 1 standard quality, 2 long life (longer durability), 3 anti static

The fourth digit corresponds to the type of fixing insert. Usually 5 = M5.