Thus weekend's estate sale buy was an eclectic mix of older tools. There are two adjustable wrenches. A Daimond 6 inch and Crescent 8 inch. Several Vaco and Xcelite nut drivers. A hatchet head, a Snap-On 1/2 drive T-bar and extension, an assortment of tiny wrenches, four sharpening stones, and some Thorsen and Craftsman sockets. The most interesting acquisition is the yellow nut driver on the far right. It was made for IBM by SEE-LECT. The shaft slides through the handle. One end is 1/4 and the other is 5/16. A cam with a push button release allows the shaft to slide.