This adapter is a 19.0 sq. to 25.4 sq. The adapter limit torque is based on the smaller insertion angle. Be careful not to apply too much force.
19.0 sq. to 25.4 sq. (19.0 sq) to 25.4 sq. (25.4 sq) - Convex 0.7 gal (19.0 L56.5 x 44 mm)