Threaded brass knob for 1/8" shank engraving tools $4.49 Quantity discounts available QuantityPrice SKU: C2-125-KNOB Threaded brass knob for 1/8" shank engraving tools Ship 10 Available Pickup in Store - FREE! Select Store to check availability. Quantity -+ Details Additional Accessories/ Options Specifications Shank Size1/8" Shank Size DetailsSpecifications Back Additional Accessories/ Options Back Shank Size1/8" Shank Size