1:64 3D Printed Semi Truck Angled Back 9" Exhaust Stacks Pair of 2 for DCP, First Gear, Ertl, Speccast and More. Universal fit. May require modification before use. Unpainted and printed in standard gray resin. Measurements are roughly 53.2mm High, pipe diameter is 3.6mm. May require minor preparations before paint such as sanding or filing. Combined shipping available at checkout. --Proudly designed and made in the USA!--PLEASE NOTE: Any vehicle models shown in photos are for demonstration purposes only and are not included in your order (unless otherwise stated in the listing). If you are looking for completed models, please check the categories on our store page. For custom model requests, please reach out directly.