The Z Poolform Mallet is not your traditional rubber mallet. It is ideal for installing the Z Poolform into the Receiver Track or liner track (vinyl liner pools). It features a larger impact surface on one side and a smaller 1.5″ square surface on the other side. This smaller surface is ideal for the Bendable Z Poolform. It allows you to tap on one tab at a time to make sure the form is adequately inserted into the Bendable Receiver Track. It also features a soft grip rubber handle.