New and superior twist locking/unlocking mechanism for extra safety and security. No tools needed to get the pedals off the bike. Perfect for easy check-in in airplanes, for commuters, to reduce theft, and for anyone who likes to swap around their pedals. Ideal for bicycle touring, MTB, and commuters. Made of one piece, top quality, durable aluminum. Spindle: Chromoly (9/16 ) Accepts toe straps. Only 355 gr!