A pneumatic pruning hook with a telescopic shank includes a handle having a chamber defined therein and connected to a compressed air source, a valve mounted in the chamber for selectively allowing the compressed flowing into the chamber. The present invention includes at least one fluid exhaust port extending through a blade. The invention is set up such that comparison data from the performance comparison computer are displayed at least to the operator of a machine via the display of the computer for displaying the production performance. After applying weld buildup material in multiple passes and sequentially to the bucket tips, the buckets are removed, stress-relieved and the weld buildup material machined to provide refurbished tenons.