Diamond Archery’s Alter Compound Bow delivers true versatility and performance. Its powered by the patented Synchronized Binary Cam System – an innovative design that utilizes two perfectly symmetrical cams that work together for flat-line nock travel, maximum accuracy, a smooth draw cycle, and speeds up to 320 feet per second. The Synchronized Binary Cam System also allows easy adjustability using a simple allen-key: the Alter’s draw length can be adjusted between 21” to 31” by removing the module screws, adjusting the draw length, and re-tightening. The Alter’s draw cycle is equally customizable thanks to the FlipDisc, which allows the archer to adapt the Alter to their particular shooting style. In addition to the draw length and draw cycle, the draw weight can be adjusted as well between 8 to 70 pounds. The massive range of adjustability options makes the Alter perfect for any archer, from young to old and beginner to pro. Other features of the Alter include a quad-limb design for increased stability at full draw for greater shot to shot consistency. Features of the Alter Compound Bow: Synchronized Binary Cam System: Utilizes two perfectly symmetrical cams that work together for flat-line nock travel, maximum accuracy, a smooth draw cycle, and speeds up to 320 feet per secondDraw Length: Adjustable between 21” to 31” by removing the module screws, adjusting the draw length, and re-tighteningDraw Weight: Adjustable between 8 to 70 poundsFlipDisc: Allows the archer to adapt the Alter to their particular shooting styleQuad-Limb Design: Increased stability at full draw for greater shot to shot consistency Diamond Archery Alter LH 8-70# Black w/RAK Bow A10795