The Jacoby 5/16 x 14 JP/Pro Thick Black Collar Ultra Pro Shaft (12.75mm) is expertly engineered to enhance your game with precision and control. Its design reduces cue ball squirt by minimizing front weight and increasing shaft flex, allowing the cue ball to maintain its intended path even when applying English. The vibration-dampening core virtually eliminates unwanted shaft vibrations during extreme spin, improving accuracy significantly. Featuring a feather-light ferrule, this shaft offers a balanced, responsive feel that elevates your stroke for consistent, high-level performance.