Additional Drilling Equipment - 3-3/4" CARBIDE ROCK DRILL BIT. BIT DIAMETER-3-3/4" BIT THREAD ID-1-1/2" Rope Style LENGTH-3-1/2" ACTUAL PICTURES SHOWN We have listed over 100 Rock bits. See all our Bits here: Rock Bits Sign up for new sales and special promotionsSign up here and we will let you know when this item goes on sale tyler #6 x1 R38 Track Page Views WithAuctiva's FREE Counter. Location: Wichita, Kansas. For complete listing information please select the Click To Bid button to see this item on eBay.