Magswitch Universal Base is the centerpiece of the Magswitch Work Holding System. This versatile base allows you to easily add the desired tool attachments and place the base on any steel or cast-iron tabletop, providing a secure and reliable hold. Its low profile design makes it for use on small surfaces, including fences and compact tabletops. To secure the Universal Base to a steel or cast iron surface, it requires two MagJigs, which come in two options: MagJig 150 with 150 lbs of hold force and MagJig 95 with 95 lbs of hold force. The Universal Base is included in the Woodworking Starter Kit, but you may want to purchase additional bases to permanently attach for all your work holding system attachments. Please note that additional tool attachments for the Universal Mounting Base are sold separately. Model Number: 8110112