SOLID PINE/SOLID PINE
Measurements/Sizes (cm): 
K80= 24.5 larg./width x 23 length./length x 1.8cm thick./thiclness -weight (cm): 0.315kg

K81= 14.5 larg./width x 14 length./length x 1.8cm thick./thiclness - weight (cm):0.100kg

Approximate weight and measurements
measurements - Made by hand