The VTX Rubber Encased Octagon Dumbbells are sold as singles but can also be bought in pairs. These rubber encased dumbbells are 8 sided preventing them from rolling. They have a reduced noise feature when dropped. These dumbbbells will also protect flooring when dropped. They also come with steel contoured handles with diamond knurling for a solid comfortable grip. These Dumbbells are available in 3, 5, 8, 10, 12, and 15-100lbs in 5lb increments.