Check the listing for details. wilson tool punch .125 X .500 OB. Condition: Used. Listed at 13.00 USD. The Wilson Tool punch in the .125 X .500 OB size is a precision metalworking tool designed for punching holes in various materials. With a durable construction and precise cutting edges, this punch ensures accurate and clean holes every time. Its size and shape are ideal for use in CNC machines and other metalworking equipment, making it a valuable tool for professionals in the manufacturing industry.