Sealant Cutter Removes thick applications of seam sealant quickly and safely for aircraft maintenance and repair. Eliminates the need for harsh chemicals & hand scraping. Saves time and effort with smoother results. Diameter: 0.83"1/4" x 28 Threaded Shank ALL ITEMS ARE SHIPPED FROM U.K SO NO IMPORT TAX TO PAY ON ARRIVAL, SOMETHING OTHER NON UK SELLERS FORGET TO MENTION WILL GLADLY COMBINED SHIP TO ENSURE CHEAPER SHIPPING.