Color: As shown in the First image. Quantity and size : As shown in the title or description. Straight Shank Connecting Rod For Lathe And Miling Machine Features: The Straight Shank Connecting Rod is Mainly Used For Lathe and Milling Machine Connecting Drill Collar Can Effectively Clamp Tools, So As to Enlarge the Application Scope of Machine Tools Features: "12mm-B10" Means "the Diameter of Straight Shank is 12mm, The Taper Number of Connecting with Drill Chuck is B10 Interface Correspondence (in General): B10: Matched with ZJ0.6-6 Chuck Head B12: Matched with ZJ1-10 or ZJ1.5-10 Chuck Head B16: Matched with ZJ1-13 or ZJ3-16 Chuck Head B18: Matched with ZJ1-16 or ZJ3-16 Chuck Head B22: Matched with ZJ5-20 Chuck Head Package Included: Morse Taper Shank X 1 Note: Drill Chuck Are Not Included