Hi guys, I haven't found a comprehensive guide anywhere for joints, just bits and pieces at various sites. So, I'd like to ask if you guys could list down the various types of joints in Transformers figures and give definitions and examples? So far, I know that there are: 1) ball-joints = "a ball rotates in a socket, held in position by friction, and when used in a Transformer toy's limb or other flexible area it can allow a great range of motion, as long as parts don't get in the way, because it can both hinge on any axis and rotate." -tfwiki 2) pin joints/single-axis hinges = "...they usually have a metal pin that connects the two parts" - mx-01 archon 3) swivel joints = "...is a joint which couples two components together while allowing them rotary motion relative to each other." - tfwiki. "...are the type generally used for neck, bicep, thigh, wrist, etc. articulation. Also called rotational joints." - mx-01 archon. (Question: Are these the same as pin joints?) 4) pegs = "...are a subset of swivel joints, relying on a peg (usually slightly mushroom-shaped, the parts from disconnecting too easily) and hole to provide rotational movement, but also allows the two parts to be disconnected to prevent breakage under high force." - mx-01 archon 5) Ratchet = "...is one in which relative rotary motion is restricted or prevented in one or both directions by a member with one or more teeth (the "pawl") which presses against a toothed wheel (the "ratchet")" - tfwiki "The clicky type are "ratchet joints". A subclass of these is sometimes denoted as "soft ratchets". Those are they type that rely on irregularly shaped joints to perform a similar function to mechanical spring-type ratchets (sometimes the spring is substituted by a plastic tab), usually using squared-off joints and friction (as evident on the elbows, knees, feet, and tailfins of the Classics Starscream mold)." - mx-01 archon This list will be continually updated. The question marks indicate that I do not know what these joints are like. Do you know what those clicky joints in Revoltech and Leader Class figures are called? (Those that go click-click-click as you turn them) Finally, I'd like to know if MP Grimlock has those click-click-click joints? Thanks a lot guys!