"Pine Fittings 2 1/2-4" Bend plastic tree fittings into any shape. This package contains 70 pine tree fittings from 2 1/2 to 4 inches in height. In scale, these trees would be about as tall: 33 to 53 feet tall (N scale); 18 to 29 feet tall (HO scale); and 10 to 16 feet tall (O scale).