The intersection Boolean produces a single solid that represents the intersection of all of the stocks and all of the tools.
Pick both solids (the order is not important). On the Structure ribbon in the Entity Modification group, click Boolean and choose from the drop-down menu. Click to close the Edit Properties dialog box.
The view now displays the result of the intersection.
Notice that the intersection has a presence in the Browser under the Geometry node. The cylinder is located under the Creation > Stocks node and the box is under the Creation > Tools node.