Cuetec Cynergy Carbon Fiber Composite 11.8mm Pool Cue Shaft - 5/16 x 14The Cuetec Cynergy 11. 8 carbon fiber composite pool cue shaft gives you pinpoint tip placement matched with exceptional accuracy and out of this world spin. They were designed and developed with input from the Cuetec Pro Team. Each Cuetec Cynergy 11. 8 is wrapped with a unique pattern of spun 15K carbon fiber tow, reinforced by Cuetec's proprietary poly foam core. Every Cuetec Cynergy 11. 8 carbon fiber composite pool cue shaft has an elongated 9. 6