When it comes to electrical work, Jonard Tools’ WBK-100 Panel Knockout Kit is a tool you can count on. This knockout kit features 2 pcs that are designed for installation of electrical, security and datacom cables. It has the ability to remove panel knockouts without damaging drywall. The function of this general hand tool kit is for installation of electrical, security and datacom cables. It measures SAE and comes in a 2-pc set.