Cheap And Discounts Dial Test Indicator Contact Point 513-474 513-474-10 Ball Length 20.9mm M1.6 Thread Shank 513-454-10 513-117 2mm Diameter Wholesale. Buy Directly From Merchant CHUANG Tool Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.