The FreeHand Zero is the production model designed to replace and improve upon the original cult classic, the FreeHand. Very similar in shape, with recessed stickers and additional spacers. It also came standard with 3 FreeHand Counterweights, including one from a set of 6 collectible character counterweights.
Not only was the Zero a long lived model, but encouraged a lot of interesting modifications as time went by.
This one is posted so you can view the Response system. Flowable silcone was a popular way of modifying response. Notice that a channel was lathed around the axle in the friction sticker area. Silicone was put in the area. This is actually adjustable to some degree, because depth of the silicone in the groove affected play characteristic.