Bit Size: 6.125" Top quality sealed bearing bits with full leg and gauge protection. 3 1/2" api regular pin. Available in many formations from Smith, Hughes, Reed and Security. $850 Bit Size 6.125" CAPTCHA Get new captcha! What code is in the image? Enter the characters shown in the image. This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.