Bit Size: 5.875" These bits are American made. They have tight bearing and little to no cutting structure repair. Open bearing. 3 1/2" api regular pin. Indicate soft, medium or hard formation. $475 Bit Size 5.875"6"6.125"6.25" 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.