● GD ● 1-1/4" ● IS47: 18.5 x 13.4 / 18.7 x 18.7 inches (46.9 x 34.1 / 45 x ZS49: 18.1 x 13.4 inches (46 x 34.1 / 45 x 45 cm) Titanium Coated Shield Cartridge Bearings Please specify your size