Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon Genuine Boley #33 lathe chuck by Boley Sale $78.00 | / SKU 41-133 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Notify me when back in stock Email address Email me when available This fits into the lathe at 6.80 mm, shank diameter is 8.00 mm. This American lathe chuck has an opening of 3.30 mm.