CRL 1/16" x 1/2" All-Purpose Foam Mounting Tape Finish:Black they can be used like

they can be used like a screwdriver

the plunger is partially hidden inside the pump and the red-line is not visible

Wear eye/face protection

it is now being used in all phases of glass cutting from hand glass cutters to computer controlled glass cutting machines

or longtime favorite Hi-SHEEN

CRL 1/16" x 1/2" All-Purpose Foam Mounting Tape Finish:Black they can be used likeHighly Adhesive and Flexible Just Peel and Apply Conforms to All Surfaces Excellent for Mirrors, Glass, Metals, Plastics, and Other Surfaces Available in Black or White Get high strength holding power with CRL Mirror Mount Foam Tapes. They are double coated, flexible foam tapes with a high tack adhesive for maximum holding power. The high density foam conforms to all smooth or irregular surfaces. It gives you excellent adhesion to glass, plastics, and