Kadee - G-Scale & #1-Scale - #831 (type) Gear Boxes (pair) (SKU 380-911)
#911#831 (type)Gear BoxesBlackReplacements for Kadee® #1 & G-Scale: #831, 787, 789, 909, 1831, 1787, 1789 & 1909 Gear Boxes.One pair per package