The kit is molded in green plastic. There is little flash, but a few nubs will need to be trimmed and a few seams sanded. The instructions are adequate. The model goes together easily. Note that THREE complete conveyers are included in the kit, which makes this a great value. When assembled it looks just like what it is. It isn't super detailed, but it is more than good enough. It is fairly large, larger than I thought it would be from the photo, being about 4.5 inches long and 2 inches tall. Since it is two separate pieces you can position them at an angle if space is a problem.