Magnetic Nova laps offered by Diamond Pacific give you a fast polishing performance of Novas combined with the convenience of an easy on-off magnetic lap. The magnetic Nova laps 12" size list for $165.00 and are available in 9 different grit sizes. They attach right onto most flat laps and are easily removed. They have a 1/16" thick backing of solid rubber containing magnetized iron particles so the laps will adhere to a cast iron, steel or nickel plated lap. The rubber is coated with a thick layer of special Nova resin-bond diamond formula for fast action and lasting service. The surface of the Magnetic Nova is made with a grid pattern for better performance. If you wish the 12" size without the 5/8" arbor hole, you must request this as a special order. Arbor holes available upon request: 1/2",5/8", 3/4" or 1". The laps comes in a variety of grit sizes. Please e-mail the grit size you want after purchasing from the 8 different grades for the grit laps (Available: 60, 140, 280, 600, 1200, 3000, 8000, 14,000)Note: Magnetic Novas work best on laps not plated with diamond, such as the steel - faced back plates or Master Laps. Sizes of other Magnetic Nova laps are 4" @ $26.00, 6" laps @ $52.00, 8" lap @ $84.00, 16" @ $285.00, 18" @ $335.00. Also available is a 24" lap by special order. Call for pricing. FOB Barstow CA.