Vessel Christa line Screwdriver Thin Shank Type -4 * 50 (No. 6100) Size: Total length /123mm Specifications: Magnet is included. Material: chrome vanadium steel Japan Import VESSEL CO., INC. is a leading company in fastening tools. VESSEL is producing and distributing VESSEL branded screwdrivers, driving bits, industrial tools, pneumatic tools and ESD-related products.