2021-12-31 00:00:00 Sheet Metal pattern development made easy. It obtains most commonly used transitional pieces and more: Lobsterback Bend, Elbow, Incline Tee, Frustum Cone, Flat Back Cone, Oblique Cone, Square to Round, Oblique Square to Round, Dome End, Trunnion (offset), Tee Hole Cut out, Tee to Reducer, Y Branch and More.