• Solid Plastisol Barrel, Comes with Lid and Clamp. 
• Quart Barrel Weight Capacity is 3-lbs
• 1/2 Gallon Barrel Weight Capacity is 6-lbs
• Gallon Barrel Weight Capacity is 12-lbs
• These are designed for use with any of the Covington Rolling Tumblers. Raised ridges inside the barrel prevent sliding, and promote a faster grind. 

Clamping the ring around the top of the barrel neck (so it sits around the aluminum lid) will increase the life of the barrel's neck section. Barrels are now made of a black material.