Check the listing for details. Vintage Greenlee No. 7306 Knockout Punch Driver Set 767 Hydraulic Tool. Condition: Used. Listed at 425.00 USD. This vintage Greenlee No. 7306 Knockout Punch Driver Set and 767 Hydraulic Tool is a must-have for any trade needing to punch holes in sheet metal up to 12 gauge. The set includes a 767 hydraulic punch driver that is perfect for punching holes or can be used to operate many hydraulic accessories.The hydraulic tool is made with durable materials that ensure it can withstand heavy-duty use. The Greenlee brand is known for its reliable and top-of-the-line tools, and this set is no exception. It is ideal for both professional mechanics and DIY enthusiasts who want to tackle their own projects. Whether you're working on a construction site or just need a reliable tool for your next project, this Greenlee No. 7306 Knockout Punch Driver Set and 767 hydraulic tool is the perfect choice.