Thumb Screws (4 Pack)
These new and improved thumbscrews allow for tool-less adjustment of tabs when using the squares. They feature a knurled grip on the outside and a 3/16" hex head on the top. The head is 1/2" in height and 5/8" diameter. Threaded portion is 1/2" long with 1/4-20 threading.
Great when you only have one hand free to make adjustments.