Check the listing for details. Carbide Tipped Boring Bar: C2, Min. Bore: 12mm, Max Depth: 40mm, Shank: 12mm. Condition: New. Listed at 31.50 USD. Super-Bore™ Carbide Tipped Boring Bar, Grade: C2, Minimum Bore Diameter= 12mm, Maximum Bore Depth= 40mm, Shank Diameter= 12mm, Overall Length= 80mm, Made in the USA by APT