Power: 30 hp Date of manufacture : 1923 - 1927
Production Manufacturer: Wallis (a part of J.I. Case Plow Works) Type: Standard-tread tractor Factory: Racine, Wisconsin, USA Wallis OK 15-27 Power Drawbar (claimed): 15 hp 11.2 kW Belt (claimed): 27 hp 20.1 kW Drawbar (tested): 18.15 hp 13.5 kW Belt (tested): 28.60 hp 21.3 kW Wallis OK 15-27 Engine Mechanical Chassis: 4x2 2WD Steering: manual Transmission: 2-speed gear Dimensions & Tires Weight: 3,630 lbs 1646 kg Front tire: 30x8 Rear tire: 48x12 Full dimensions and tires ... Belt Pulley Diameter: 18.5 inches 46 cm Width: 7 inches 17 cm RPM: 475 Speed: 2,300 ft/min 701.04 meters/min

Wallis Bear	Power: 55 hp	Date of manufacture : 1910 - 1914

Wallis Cub	Power: 57 hp	Date of manufacture : 1914 - 1917

Wallis Cub Junior	Power: 33 hp	Date of manufacture : 1917 - 1919

Wallis K 15-25	Power: 27 hp	Date of manufacture : 1919 - 1923

Wallis OK 15-27	Power: 30 hp	Date of manufacture : 1923 - 1927

Waterloo Manufacturing Company Bronco	Power: 11 hp	Date of manufacture : 1948 - 1950

Wetmore 12-25	Power: 27 hp	Date of manufacture : 1919 - 1938