Product information "Schraubwürger seatpost clamp" Schraubwürger translated means something like strangler. And this seatpost clamp lives up to his name. Once fitted it grabs your seatpost and won't let go. A MUST HAVE for all TUNEing lovers who don't need to move their seatpost frequently. Intricate CNC machining optimizes the weight and a Titanium screw ensures secure clamping. Our Schraubwürger is sleek, strong and light. The 31,8mm version weighs only 9,8g! Available in all tune anodized colours!