Mata tioata i le 10 po o le 12 mm mafiafia mo foe faamasinoga, fua 2995mm × 1995 mm, 1995mm × 1995 mm, faatasi ai ma 4-8 counter-bored pu respectivelywith polesi pito mafolafola, atoatoa tulaga faatonuina ma atoatoa planimetric.