Offering this Bison 2 Jaw scroll chuck. This is marked 1651. Chuck is 7.75 diameter. Center hole is 2.17. Bottom hole with threads has an outer diameter of 3-11/16. Jaws are 3.5″ long x 1.5″ wide. This weighs 41.12 lbs overall. Shows some signs of use. Please see all photos for more information. Feel free to ask questions. We will leave you feedback after receiving yours, that way we know you are happy with your item. Our zip is 44077. Please read description and review all photos. Most of our items are pre-owned and/or used. We have no histories on these items, unless noted.