Working on live electrical systems requires certified tools. Insulated screwdrivers rated to 1000 V (IEC 60900) protect electricians against shock and arcing when used and inspected properly. Below is a practical guide on construction, testing, selection, and maintenance.

Hydraulic pullers are indispensable in heavy-duty maintenance. They enable technicians to safely extract stubborn components with controlled force, reducing risk and downtime.

Removing ball joints safely and efficiently requires the correct tool and process. This guide walks you through each step from vehicle setup to joint removal, with expert tips to ensure safe, damage-free suspension work.

Choosing the right installer is critical for a leak-free, long-lasting seal. Below we explain the most common oil seal installation tool types, when to use each, and practical tips to avoid lip damage, cocking, and rework—plus how DNT Tools can provide precision, OEM/ODM-ready solutions for your workshop.

When removing cylinder liners, the right tools, clean parts, and precise technique make all the difference. Follow these OEM-backed best practices to prevent costly damage to engine blocks and liners.

Strong materials and precision construction are essential for cylinder liner pullers that’ll withstand demanding environments. Below are key criteria drawn from industry-leading mod

By DNT Tools · Ningbo Dongning — professional tool manufacturer specializing in precision pliers, sockets, and automotive/industrial hand tools. Learn more: About Us.

By DNT Tools · Ningbo Dongning — as a precision tool manufacturer, we design both adjustable and preset torque tools to meet diverse needs. Discover what makes each type useful and how to choose. About Us

At DNT Tools (Dongning Tools, Ningbo, China), although we primarily manufacture high-quality tools, we also support innovations in sustainable and off-grid technologies. In this article, we explore how a hydraulic ram pump can lift water without electricity — using only the momentum of flowing water. You’ll learn the principles, the operational cycle, and see animations or visual diagrams to help you fully grasp how it works.

Exhibition invitation

At DNT Tools, we’ve built our reputation on high-quality extraction tools — so we’ve seen what works, what fails, and what to do next.

Bearing separators (also called bearing splitters) are specialized tools that enable non-destructive removal of bearings, sleeves, gears, and similar components

How to Use an Armature Bearing Puller Safely

3-jaw gear pullers are indispensable tools for removing gears, pulleys, bearings, and other tightly fitted components

When servicing front wheel bearings on front-wheel-drive (FWD) vehicles, having the right tool kit makes the difference between a smooth repair and a time-consuming

We’ll also introduce how DNT Tools supports professionals with high-quality tool solutions.

DNT Tools a long-established manufacturer of heavy-duty automotive repair tools — including bearing pullers, spring compressors, wheel-hub tools and more — is pleased to announce that we will participate in Automechanika Shanghai 2025, the premier international auto parts & repair tools exhibition.

Discover what a “ball joint separator” is, how it works, and why it’s essential for safe, efficient suspension repair. This article explains the basics — from tool types and mechanical principles to proper usage steps — helping both DIY enthusiasts and professional mechanics understand when and how to use a separator. If you value precision, safety, and durability, learn why a high-quality separator from DNT Tools stands out. Upgrade your tool kit and get the job done right the first time.

When it comes to repairing or rebuilding truck and commercial‑vehicle transmissions, not all pullers are created equal. Heavy‑duty transmissions demand tools engineered for far greater force, durability and precision than those used in ordinary passenger‑car repair. At DNT Tools

For professional workshops, distributors or tool suppliers, offering and using quality shock absorber disassembly tools is a mark of professionalism and reliability. If you are interested in sourcing or manufacturing such tools

A brake caliper wind back tool is essential for safely retracting brake caliper pistons during brake pad replacement, especially on rear brakes with integrated parking mechanisms. This guide explains how to use the tool correctly, from preparing the vehicle and selecting adapters to rotating the piston and avoiding common mistakes. Learn professional tips for safe and efficient operation with tools from DNT Tools—built for quality, versatility and workshop reliability.