Craft your own unique arrow design with Bohning's Professional Crester. The Professional Crester features a base made of locally-sourced maple. Its carbon-brush motor is quiet and incredibly durable - Bohning tested them by running several motors non-stop for over 2 years before any sign of failure occurred! The Professional Crester has an adjustable arrow rotation speed of 130-440 RPM and a ruler that doubles as a pattern rest with English and Metric measurements. Available with standard U.S. power supplies (accept 110 or 120V) and adaptors