Kreg KMA4500 Straight Edge Guide ( 2 x 28-inch rails)

Make perfectly straight cuts up to 4 feet in sheet goods with guided cutting
Cut sheet goods down to size with precision and ease by using the Kreg® Straight Edge Guide. Work with material up to 4 feet and get the cuts you need — whether you're using a circular saw, jigsaw, or trim router. (Works with most brands.)