Channel steel with spring steel clips, doubled Plastisol-coated and riveted to support bracket. Features Delrin tips that insert between glass and rubber seal; with a lip that hooks over the edge of glass to form a rigid gun rack unit. Mounts without drilling holes. Adjustable length to fit standard size windows from 14 Inches to 17-3/4 Inches. Designed to fit all mini pick-ups. No holes to drill. Adjustable length from 8 Inches to 11 Inches.