Pack of brown insulators 24 pieces (suitable for OBB Austrian railway) - measures 3.8 x 3.6 mm Pack of 24 pieces brown insulators (suitable for Austrian OBB railway) - measures 3.8 x 3.6mm Packed with 24 pieces of brown insulator (passable for ÖBB) - size 3.8 x 3.6 mm.
