The Pechauer Black Ice Break Shaft – 5/16 x 14 13.00mm for Pechauer features our Infused Chemical Engineering (ICE) Technology, which infuses chemicals into the wood cells to increase density and create a smooth, glass-like feel. This multi-step process is permanent and penetrates the entire shaft, resulting in a weight-forward balance delivery and an average weight of 6.4 oz. Experience maximum power and a greater break with minimal effort – this shaft can turn any cue into a break cue.