The extremely stable finished key is 4 inches in diameter and weighs 4.6 pounds. The aluminum armature's axle rotates in a pair of sealed, stainless steel ball bearings. Both the contact gap and the force adjustment are on the case and are therefore stationary. A neoprene anti-skid surface covers the brass bottom plate, which provides additional protection and eliminates the need for a dust cover. Of course, and a good value as well.
Production is limited, and each key is serialized.
Shipping weight is 6 pounds.