(Click HERE for a guide for the number of magnets required per size of fiberglass hole-former)

Adjustable Slide Bars

Threaded Inserts

Magnetic Jacket Mount Assembly

Say NO to Swiss cheese forms! Magnetically attach fiberglass knockouts to the outer jacket of your mold instead with our Magnetic Jacket Mount Assembly.

U-Channel EDPM Extrusion

Can be applied to the outer edge of fiberglass hole-formers/knockouts to create a tighter fit to the jacket, reducing the risk of concrete leaking into the back of the hole-former/knockout.

Great for jacket-mounted parts, tapered walls, and out-of-round molds.