Teng Tools 100 mm Plus Minus Insulated Screwdriver — Dual-Profile Electrician Hand Tools Driver 216 mm - MDV844NF
Insulated Screwdrivers · MDV844NF
100 mm Plus Minus Insulated Screwdriver
Dual-Profile Electrician Hand Tools Driver 216 mm
- Fast US dispatch from our Fort Worth, Texas warehouse
- Genuine Teng Tools — professional-grade, designed in Sweden
- Secure checkout — encrypted payment, trusted providers
- Backed by guarantee — built to last a working lifetime
Why this one
Dual-profile tip design
This tool features a plus/minus blade geometry engineered to engage both slotted and cross-head fasteners, giving electrician tools professionals a versatile option that reduces the number of drivers needed on the job.
Sized for everyday electrical work
With a 100 mm blade and 216 mm (8.5 in) overall length, this screw driver balances reach and control for work inside panels, junction boxes, and equipment enclosures.
Insulated for safety
The insulated shaft and handle are designed to protect the user when working near live circuits, making this a purpose-built hand tools addition for any tradesman who regularly encounters energized conductors on commercial or residential sites.
Ergonomic grip handle
The contoured handle is shaped to fill the palm and resist rolling on angled surfaces.
Individual screwdriver, not a set
Sold as a single driver so you can fill a gap in your existing kit or build a custom lineup one tool at a time.
Read the full description
The Teng Tools 100 mm driver packs two fastener profiles into one blade, letting you switch between slotted and cross-head screws without reaching for a second tool. That means fewer drivers in your pouch and faster work inside crowded panels.
The 100 mm blade provides enough length to reach recessed terminals while the 216 mm (8.5 in) overall dimension keeps the tool compact and controllable. At 103 g, it is light enough for all-day use yet substantial enough to deliver confident torque on stubborn fasteners.
Insulation along the shaft and handle is designed to guard against accidental contact with electrical tools and live conductors, making this driver a practical choice for anyone who works on energized or potentially energized circuits.
The handle is contoured for a secure, comfortable grip that resists rolling on sloped surfaces. Whether you are wiring a new service panel or swapping a receptacle, the ergonomic shape helps you maintain control and reduce hand strain over long stretches of repetitive work.
Sold individually, this driver lets you replace a worn tool or round out an existing insulated kit without paying for sizes you already own. Pair it with other Teng Tools insulated drivers to assemble a custom lineup that matches the fasteners you actually encounter on the job.
Get it in a set
This insulated screwdrivers also comes in this set, with the tools that go with it.
Specifications
| Size | Flat/PH2 |
|---|---|
| Length | 8.5 in (216 mm) |
| Weight | 3.6 oz (103 g) |
| Part number | MDV844NF |
Data sheet
Full details from Teng Tools. Download PDF
Lifetime warranty
Send a photo and your order number. Same-day shipping on replacements.
Ships from Texas
From our Fort Worth warehouse.
Questions?
Call (817) 767-3392.
Shipping
Free shipping on orders over $99. Orders are stocked, picked and shipped from our warehouse in Fort Worth, Texas — orders placed on business days ship same-day wherever possible.
Lifetime warranty
Teng Tools hand tools are backed by a lifetime warranty against manufacturing defects. Screwdriver bits and socket bits are consumables and are guaranteed to meet dimensional standards. Torque wrenches and air tools can be serviced and recalibrated on request — contact us to arrange it.
Returns
Not right for the job? Contact us within 30 days of delivery and we'll sort out a return or exchange. Tools must be unused and in their original packaging. Warranty claims are handled separately — a defective tool is our problem, not yours.
Why Teng Tools?
Swedish Design Since 1985
Trusted in 30+ countries. Designed in Sweden, built to ISO and DIN standards.
Shipped Fast from Texas
US warehouse in Fort Worth, so orders move fast. TAA approved for government and defense.
Lifetime Warranty
Something goes wrong? Send a photo and your order number — same-day shipping on replacements.
The Devil Is in the Detail
Satin-finish wrenches, through-blade screwdrivers, heavy-gauge storage — built to last.