C20 is an element made of white, translucent plastic in the same dimensions as the no. 20 biscuit.

C10 and C20 plastic biscuits are the proven joining solution for mineral composite materials such as Corian, Varicor.
The white transparent plastic ensures that the connectors do not show through thin materials. The specific adhesive for composites can be used for the joints as well as for the biscuits. Since the C10 and C20 do not swell, these biscuits are also suitable for outdoor or wet areas. The sizes 10/20 match the sizes of the original wood biscuit.