51/52Pcs Stainless Steel Thread Plug Gage 60 And 55 Degree Screw Pitch Measuring ToolFeatures:Applied to Thread Measurement and External Thread. Threaded measuring instrument, through quenching, strong hardness, head with magnet. Easy to use, light and delicate, with precise measurements and simple structure, which can be widely used and durable. It is useful for checking the angle of the tool when cutting threads in metal lathes. Specifications:Material: Stainless Steel Type (Optional): US (51pcs)::60*60mm/2.36*2.36"Metric+Imperial(52pc): 67*20mm/2.63*0.78" Measuring Range: 0.25 - 6.00mm/0.0098" - 0.23"51pcs 60° US.System:4,4.5,5,5.5,6,7,8,9,10,11,11.5,12,13,14,15,16,18,20,22,24,26,27,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,66,68,70,72,74,76,78,80,82,8452 pcs. 60° Metric/Imperial:60° Metric: 0.25,0.3,0.35,0.4,0.45,0.5,0.6,0.7,0.75,0.8,0.9,1.0,1.25,1.5,1.75,2.0,2.5,3.0,3.5,4.0,4.5,5.0,5.5,6.055° Imperial: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,62GPeq Includes:1 x Thread Measuring GaugeNote:Please note that the new type and old type of this product will be sent randomly, and please make sure that you won't mind ordering. 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow.2) payment must be made within 3 days of placing the order.3) if you are unable to check out immediately after the listing ends, please wait a few minutes and try again, payments must be completed within 3 days. About Shipping1.