The Vessel MEGADORA No.900 Extra-Long Slotted Screwdriver, model 900S6400, is a 1/4" (6 mm) flat-blade hand screwdriver with a 400 mm shank, built for reaching fasteners that sit far back from the opening. This is a slotted screwdriver designed for long-reach fastening and adjustment work in automotive, equipment and general maintenance applications.

The tip is a 1/4" (6 mm) wide slotted blade, 1/16" (0.9 mm) thick, which suits common mid-size slotted screws found on hose clamps, adjustment screws and terminal hardware. The shank measures 16" (400 mm) long and 1/4" (6.4 mm) in diameter, and overall length comes in at 20-1/16" (510 mm), so you get real reach without stepping up to a pry bar-sized tool.

Length is only useful if you can control it. Vessel pairs the long shank with a 1-5/16" (34 mm) diameter grip, giving your hand enough surface to keep the blade seated and steady while you turn. That combination is what keeps a 16" (400 mm) driver from wandering off the screw slot when the fastener is buried at the back of an engine bay.

The shank includes a knurled section. Use it to spin a loosened screw out quickly with your fingers once the initial break-free is done, and use it to ream and widen a hole in wood or board material when you need a slightly larger opening.

MEGADORA is Vessel's flagship screwdriver line, and the No.900 Extra Long Type is the long-reach version of that standard driver. Vessel is a Japanese tool maker known for screwdrivers and bits used across automotive and industrial assembly work.

Pick up the 900S6400 if you work on cars, trucks, HVAC equipment, appliances or machinery and regularly run into slotted fasteners you cannot reach with a standard-length driver. Vessel specifically calls out automotive headlight adjustment and hose band removal as target jobs.

The Long-Reach Slotted Driver You Keep for the Jobs Nothing Else Reaches

The Vessel MEGADORA 900S6400 gives you 16" (400 mm) of reach on a 1/4" (6 mm) slotted tip, with a grip big enough to keep it under control.

• Who it's for: Auto techs, equipment mechanics and anyone who keeps running into slotted screws buried behind other parts.
• Why it stands out: Japanese-made flagship screwdriver line, a large 1-5/16" (34 mm) grip for control at length, and a knurled shank for fast finger spinning.
• Worth knowing: This is a single slotted 1/4" (6 mm) driver. If you need Phillips #2 at the same length, Vessel makes a matching No.900 extra-long Phillips version.

• How long is the Vessel 900S6400? The shank is 16" (400 mm) and the overall length is 20-1/16" (510 mm).
• What size screws does the 1/4" (6 mm) slotted tip fit? It fits slotted screws with a slot that accepts a 1/4" (6 mm) wide, 1/16" (0.9 mm) thick blade, a common size for hose clamps and adjustment screws.
• Is this a Phillips or slotted screwdriver? The 900S6400 is slotted (flat blade). The Phillips #2 extra-long version is a separate model.