Additional Drilling Equipment - 2-1/2" CARBIDE ROCK DRILL BIT. TIMKEN BRAND. BIT DIAMETER-2-1/2" BIT THREAD ID-1-1/4" Rope Style LENGTH-5-1/2" 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 #5 x1 R43 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.