52pcs Thread Pitch Gauge CR Stainless Steel Screw Pitch Measuring Tool (Metric&British) Specifications: Material: CR Stainless Steel. Type: Metric imperial (52pc). Size: 67 × 20mm/2.63 × 0.78in 60°Metric(24Pcs): 0.25,0.3,0.35,0.4,0.45,0.5,0.6,0.7,0.75,0.8,0.9,1.0,1.25,1.5,1.75,2.0,2.5,3.0,3.5,4.0,4.5,5.0,5.5,6.0 55°Imperial(28Pcs): 4G,4-1/2G,5G,6G,7G,8G,9G,10G,11G,12G,13G,14G,16G,18G,19G,20G,22G,24G,25G,26G,28G,30G,32G,36G,40G,48G,60G,62G Package: 1 52pcs Metric Imperial Thread Measuring Gage