Swanson Big 12 Speed 12 In. Aluminum Rafter Square Larson 1/2" drive 6-point sockets -

1/2" drive 6-point sockets - 1/2"

varnished wood or vinyl clad window frames with the double-face tape provided

Made from proprietary steel and heat treated to control hardness

high strength repair material

Swanson Big 12 Speed 12 In. Aluminum Rafter Square Larson 1/2" drive 6-point sockets -Cast aluminum alloy. Measures 12" x 12" and 17" across the diagonal, which is marked off in degrees from 0 deg. (degree) to 90 deg.. Features scribe bar, notched every 1 4", to lay out parallel lines. Lay put bar adjusted out to fit out of square corner. 2 adjustable stop pins can be set for proper run and proper rise. Includes Blue Book of Rafter Length and Roof Construction.