This Chemical Concepts, Inc. hardware kit with wafer, stud and nut is the perfect choice for anchoring sinks beneath stone countertops. The wafer is glued to the underside of the countertop using epoxy. Then, a sink clip (not included) is positioned around the stud before the nut is added and tightened to create a secure hold. The first producers of no-drill fasteners for attaching undermount sinks and dishwashers to stone and solid surface countertops, Chemical Concepts continues to improve its products. Improvements have included increasing wafer surface area and dimpling the bond line. Its FIB38 female nut was introduced to allow installers to attach undermount sinks in the shop rather than on the job site. The Chemical Concepts dishwasher mount now features an adjustable fastener that secures dishwashers installed after the countertops.