K&S Engineering 1147 3/16"x36" Round Brass Tube with .014 Wall 6 Pack Helicopter heavy duty (left & right)/

heavy duty (left & right)/ portal drive input gear

3-car set includes diner

Z Scale - Standard DC

all Class I's use at least some AC units and most are adding mainly AC units going forward

but with its basic structure essentially unchanged

K&S Engineering 1147 3/16"x36" Round Brass Tube with .014 Wall 6 Pack Helicopter heavy duty (left & right)/K&S Engineering 1147 3 16"x36" Round Brass Tube with . 014 Wall 6 Pack 3 16" OD x 0. 014" Wall x 36" Long Round brass tubing is a popular material choice for a wide range of applications. Brass is a highly durable metal with excellent corrosion resistance, making it ideal for use in harsh environments. Additionally, brass tubing has high thermal conductivity, making it an excellent choice for use in heat exchangers, radiators, and other applications