This is a forest camp Basic Six knuckle. The hard aluminum cast is coated with a resistant finish. It fits right into a jungle or hunting environment. The six holes on this knuckle are shaped to endure the most impact force possible. We know design is not everything, so the high-craft aluminum used in this knuckle was chosen to maximize the strength. Overall Length: 4.5 Inches. Construction: Thick Aluminum. Finish: Electroplated, Forest Camo.