301064 - THREAD GAUGE SET - 4 PC.

*Designed to easily identify thread diameter and pitch sizes including metric, SAE, UNF, UNC and BSP styles
*Holes in gauges allow easy identification of component sizes
*4 piece set suitable for use to identify bolts, fittings, pipe and spark plug sizes
*Manufactured from soft aluminium alloy.
*Metric: Thread size - 2.5- 22mm , thread pitch - 0.45-2.5mm
*USS (Small): Thread size - 1/4" - 3/8" , thread pitch - 16-44 TPI
*USS (Large): Thread size - 1/16"-1/2",10-18mm , thread pitch - 10-28 TPI,1.00, 1.25, 1.50 (mm),14, 18, 27 (TPI)