Ø unutarnji 12,0 mm
Prikladan za slijedeće modele:
RUGGERINI CRD951, RUGGERINI RD900, RUGGERINI RD90, RUGGERINI RD850, RUGGERINI RD85, RUGGERINI RD80, RUGGERINI RD105, RUGGERINI RD101, RUGGERINI RD100, RUGGERINI RD951, RUGGERINI RD950, RUGGERINI RD95, RUGGERINI RD920, RUGGERINI RD901
