

PTK-8419
"TruTorque SL" Metric Nut Driver (4.0mm)
ProTek RC "TruTorque SL" Metric Nut Driver (4.0mm)
The ProTek R/C "TruTorque SL" 4.0mm Metric Nut Driver features a large 20mm diameter handle with machined relief holes and cross hatch knurling to reduce weight and provide a high grip surface. The end of the handle features a rotating end cap that allows the tool to spin in your palm, maximizing comfort during long wrench sessions. Plus, the tip size is laser etched in not one - but the THREE different spots on the handle to help simplify identification. The precision cut tool steel tips provide an exceptional fit with the fastener, and feature a bronze colored finish that not only looks good, but also helps to protect the steel from corrosion.
ProTek R/C has raised the bar again, with investment grade tools that will outlast the life of the model you are working on...and remain with you for years after. Grab a set and see why TruTorque tools are used and trusted by professionals and weekend warriors around the world.
Features:
- CNC machined knurled aluminum handle with relief holes
- Rotating aluminum end cap
- Durable, precision cut, 80mm long Tool Steel tip
- Tip size is etched in three places on the handle for easy identification
Includes:
- (1) 4.0mm Nut Driver
Pairs well with
Easy to use for beginners
Durable build for long-lasting fun
Quick recharge and extended range for all-day play
Perfect for pools, lakes, and calm rivers
Product details
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Use collapsible tabs for more detailed information that will help customers make a purchasing decision.
Ex: Shipping and return policies, size guides, and other common questions.

Engineered for Speed. Built for Control.
Our RC vehicles and parts are crafted with cutting-edge tech and tested for durability. From high-speed drones to rugged RC cars and boats, every product delivers serious fun and unmatched reliability.
Performance You Can Trust
Join thousands of RC enthusiasts who count on ParkFlyers for top-tier quality, responsive customer support, and an unbeatable collection of parts and models.
Got Questions? We've Got Answers
What types of RC vehicles do you sell?
We offer a wide range of RC vehicles including airplanes, drones, helicopters, cars, trucks, boats, and a full selection of parts and upgrades for each.
Are your products ready to run (RTR) or require assembly?
Most of our models are RTR (Ready to Run) or RTF (Ready to Fly), meaning they include everything you need out of the box. Some kits may require minimal assembly—check the product description for details.
Do you offer replacement parts?
Yes! We stock replacement parts for most models we sell. If you’re not sure which part you need, contact our support team and we’ll help you find the right match.
How long does shipping take?
Orders typically ship within 1–2 business days. Delivery time depends on your location, but most customers in the U.S. receive their orders within 3–7 business days.
Do you ship internationally?
At the moment, we primarily ship within the U.S., but international shipping is available on select items. Please contact us for a custom quote.
























