Fits rear inner (differential side) on the following Polaris models: 2001-2005 Sportsman 400 4x4, 1999-2005 Sportsman 500 4x4, 2003-2005 Sportsman 600 4x4, 2002-2005 Sportaman 700 4x4, 1999 Worker 500 * Boot material manufactured with a heavy duty thermoplastic type rubber, giving you a thicker, stiffer, more puncture resistant boot * Boot height: 3.55 in, Large end inside diameter: 3.06 in, Small end inside diameter: 0.91 in * Kit includes 2 boots, 2 grease packs, 2 large clamps, 2 small clamps.