Built to last with top quality leather and hardware, you can rely on Martin’s 4-inch steer roping breastcollar for your roping needs. Featuring natural roughout leather, this breastcollar looks and acts the part. Martin Saddlery created this breastcollar to meet your needs in both quality and durability. 4-inch Steer Roper Breastcollar. Martin Saddlery strap is hand-oiled and hand-finished the traditional cowboy way. Some variations in leather tones may occur.