GMCO Heavy Duty Industrial Stems, used in conjunction with corresponding ferrules, provide a permanent end connection to rubber industrial hoses for use in the toughest applications. Constructed of pipe grade schedule 40 API 5L Grade B Carbon Steel and zinc plated chromate finish to provide years of trouble free service. GMCO Heavy Duty Swage Stems are longer and heaver than most swage stems on the market and cover a larger range of hose working pressures. Couplings can be crimped or swaged for ease of installation. George Myer also has the largest in stock size range of swage fittings in the industry, covering sizes for 2” through 12” with all conceivable end configurations.