Bostitch tu 216 2330k e pneumatic headless pinner 23 gauge bostitch tu 216 2330k e p this pneumatic headless pinner 23 gauge from bostitch is a lightweight small gauge pinner built for construction and industrial use especially fine mouldings avoiding marking of the job beading or even tacking work in place while the glue dries p p equipped with numerous features including an auto adjusting magazine aluminium housing power adjustment secondary trigger rear exhaust compact nose