Vessel 910 Megadora +1x100 (JIS) +1 Screwdriver Total length 178 x handle diameter 21 mm Length of shaft : 100mm Total Length : 178mm 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.