Antique Early To Mid 1800s Unbranded Brace 5/16" Square Box End w/Wing Nut RARE! Inherited from my great grandfather, a carpenter in St Louis until his death in 1899. This hand drill/brace has an absolutely unique square bit hole with a gorgeous wing nut in place of an adjustable chuck. Measures 11 3/4 inches long, 3 1/4 inch radius on curve of handle. No bearings, wood loosely rotates on steel handle. Includes 1/2 inch cast socket. Wood is in nice shape.