![#20005 - New Hex-Socket Flywheels (fits 2.0 mm motor shafts)](http://ppw-aline.com/cdn/shop/products/20005_hex_flywhl-310_1024x1024.jpg?v=1471737654)
#20005 - New Hex-Socket Flywheels (fits 2.0 mm motor shafts)
#20005 - New Hex-Socket Flywheels, slip fit, attach with #20010 flywheel cement
Part #12032 Hex Drive Couplings is needed to hookup flywheels and part #12033 Hex Drive Worm Couplings are also needed to hookup hex drive couplings to worm gear on locos that used ball couplings and did not use hex couplings originally.