Magswitch Universal Base is the centerpiece of the Magswitch Workholding System. All tool attachments are designed to fit the Universal Base (attachments sold separately). Low profile design enables use on small surfaces including fences and small table tops. Requires two MagJigs to secure the Universal Base to a steel or cast iron surface. Accepts both MagJig 150 (150 lbs. of hold force) and MagJig 95 (95 lbs. of hold force). Simply add the desired tool attachment, place anywhere on any steel or cast-Iron tabletop, and you ready to go. Add more Bases and MagJigs to use multiple tools at the same time. You set a Universal Base in the Starter Kit, but you may wish to get more and permanently attach one for all your Workholding System attachments. Features: * Accepts all Magswitch Workholding System tool attachments * Accepts both MagJig 150 and MagJig 95 using the adapters included * Get all 7 attachments and have the ideal workholding system for all your steel top table tools * Add more Universal Mounting Bases and MagJigs to use multiple tools at the same time What"s In The Box: * Magswitch 8110112 Universal Base * (1) each left and right adapters for MagJig 95 * (4) screws * Wrench