Red Hound Auto 10 Steel Spring Snap Quick Link Carabiner Hook Clip 4" Long Light Duty 3/8" Thick 320 Pound 10 Steel Spring Snap Quick Link Carabiner Hook Clips Dimensions: 3/8" Thick; 4" Long Spring Clip is Zinc-plated and made to last Heavy Duty: rated at 320 lbs Made durable; ready to handle tough environments