66 Pcs Nut and Bolt Thread Checker – 34 Standard & 32 Metric, Detachable Bolt Si
CPU Model Number 50 Thread Checker with Toolbox. Model Number 66 Thread Checker with Toolbox. Other Special Features of the Product Quickly identify nut and bolt sizes. EXCELLENT 66 PCS NUT AND BOLT THREAD CHECKER, ESPECIALLY IN TIGHT SPACES.