I've been practicing with the little cheap ones you can get on eBay. The official one is larger and
handles much easier. Looks better too. Only mine was a bit hastily fashioned. The corogated locking
mechanism keeps chipping off into my fingers. Last night I got a sliver and had no idea where it
came from. Today I pick up the set not even doing the move and a big honking shard get logged in my
pinky drawing blood. So three stars. Great trick but I shouldn't have to bleed for my art.