Extreme RT 900 4 - Pin Sights: Ultrabright AND ultra affordable. Bright performance at a great price! That's what the Extreme RT900 is all about. For outstanding brightness, this sight is the evolution to new Ultrabright, extended length fiber optic pins. Plus quality and value guaranteed by the Extreme name... the company made famous for building ultra tough, user friendly archery products. Unique features features developed by years in the field: Stainless steel ULTRA slim line pins for less target blockage than any other pin; Extended length fiber optic system... over 2 feet of fiber optic with each sight; ALL parts are totally CNC machined from 6061-T6 aluminum bar stock for serious toughness; Quick change fiber optic system lets you even change out fiber optics in the field; Tail Light System lights only the tips of the fiber, mounts to the rear for ease of use. Bright performance, big value. State Size. Order Today! 7/16-20 threads screw into the top of the sight housing for added brightness when you need it most. AVAILABLE SEPARATELY: Extreme Blue Flame Sight Light; Extreme RT 900 4-Pin .019 Sight, Black; Extreme RT 900 4-Pin .029 Sight, Black; Extreme RT 900 4-Pin .019 Sight, Realtree Hardwoods; Extreme RT 900 4-Pin .029 Sight, Realtree Hardwoods - word search in our store for 'Extreme'. Extreme Purple Haze Sight Light