Pack of 24 -piece brown insulators (suitable for Austrian rail Obb) - Measures 3.8 x 3.6 mm Pack of 24 Pieces Brown Inscalars (Suitable for Austrian Obb Railway) - Measures 3.8 x 3.6mm Packung Mit 24 Stück Braunen Isolanten (Passing Für Die ÖBB) - Mistory 3.8 x 3.6 mm.