Hole required:155mm daimeter

and this scale model operates on O-27 curves

Manufacturer: Dynamite

The Trainz SKU for this item is P12107630

Everything you need to start building your own railroad empire:

Broadway Limited 1549 HO California Zephyr 11-Car Mixed Set ProductID_12134951 Hole required:155mm daimeterMixed set includes 1 each of the following California Zephyr cars: #1491 Baggage Car, CBQ #905 "Silver Coyote" #1494 Vista Dome Car, CBQ #4722 "Silver Stirrup" #1496 Vista Dome Car, WP #817 "Silver Thistle" #1499 Vista Dome Car with Conductor's Window, WP #814 "Silver Sage" #1502 Vista Dome Dormitory Buffet Lounge Car, CBQ #252 "Silver Chalet" #517 48 Seat Dining Car, DRGW #1115 "Silver Banquet" #1513 10 Roomette, 6 double Bedroom Sleeper Car, DRGW