Centering support plane screwdriver

A centering, support plane screwdriver, comprising:

• a retention housing having a base portion connected to a top housing portion having an upper planar or substantially planar support surface, defined by an outer perimeter that conforms to the outer circumference of an espresso machine screw collar or shower screen, and surrounding a central cylindrical walled recess extending into the top housing portion from a circular recess margin at the support surface to a level below the support surface, the walled recess comprising an integral or non-integral screwdriver tip centered therein, wherein the support surface, the recess margin, the walled recess, and the screwdriver tip are configured to center, receive, and engage a shower screen screw head or a screwdriver tip engaging portion thereof within the walled recess, and to center, receive, and support the screw collar or the shower screen on the support surface;
• and
• an exterior turning face positioned on the retention housing, and configured to be in turning communication therewith upon application of a torquing force to the turning face, wherein the cylindrical wall of the walled recess has a pair of opposed vertical slots extending perpendicularly from a support surface-proximal position below the support surface to a support surface-distal position, and wherein the screwdriver tip comprises at least an upper edge portion of a screw head-engaging insert extending between and into the opposed vertical slots in the cylindrical wall of the recess.