170-in-1 CRV Steel Screwdriver Set with Insulated Blades and 4mm Cutter Head

This 170-in-1 screwdriver set brings together a wide range of bits and a chrome vanadium steel build in one kit. The insulated design is a stated feature, making it relevant for electrical repair tasks where protection matters. The blade surface is nickel-plated, a finish often used to help resist corrosion. With a 4mm cutter head and a 28mm cutter bar length, the set is aimed at precise work in confined spaces. The handle is also made from chrome vanadium steel, giving the tool a consistent metal construction throughout. Six colour options are available: black and blue, black and red, black and yellow, black and gray, black and orange, and black and purple.

Features and Construction

The build centres on chrome vanadium steel for both the blade and the handle, with a nickel-plated blade surface and stated insulation. These details come directly from the product information and define what the set offers in terms of materials and safety-related design.

Material and Build

Both the blade and handle are made from chrome vanadium steel, a material commonly chosen for tools because it holds shape well under load. The blade surface is nickel-plated, which is a finish that can help protect against corrosion when the tool is stored properly. The insulation is a stated feature, so the screwdriver is intended for use where electrical safety is a consideration. No additional performance ratings or certifications are claimed beyond what the source text lists.

Size and Practical Fit

The cutter head specification is 4mm, and the cutter bar length is 28mm. These measurements indicate a compact tool suited to detailed work rather than large fasteners. The 4mm head is a common size for small screws found in electronics and light electrical fittings. The 28mm bar length helps with access in recessed or narrow areas. Only these two measurements are provided, so no other dimensions are stated.

Uses and Placement

The set is designed for electrical repair and precision tasks, supported by the insulated design and the compact 4mm cutter head. It can be kept in a tool kit or workshop drawer, ready for jobs that require a small, insulated screwdriver.

Event or Professional Use

For electricians and technicians, the insulated feature is the main practical point. The 4mm cutter head and 28mm blade length allow work on small terminals and connectors where space is limited. The chrome vanadium steel construction is consistent across blade and handle, which keeps the tool’s behaviour predictable during use. The nickel-plated surface is a stated finish that supports routine maintenance when wiped clean after work.

Everyday Home Use

At home, the set is useful for small electrical repairs, such as tightening screws on sockets, switches, or small appliances, provided the user follows safe practices. The compact size makes it easy to store in a kitchen drawer or toolbox. The six colour options allow you to pick a set that stands out in a crowded toolkit. No additional household uses are claimed beyond those supported by the tool’s size and insulation.

Benefits and Buying Value

The main value comes from the combination of chrome vanadium steel, nickel plating, insulation, and the specific 4mm and 28mm measurements. These are factual details that define the tool’s suitability for small-scale electrical and precision work.

Reuse and Low Maintenance

Chrome vanadium steel is a hard-wearing material, and the nickel-plated blade surface is stated as a protective finish. To keep the tool in good condition, wipe it clean after use and store it in a dry place. The insulation should be checked visually before any electrical work, as with any insulated tool. No specific maintenance schedule or lifespan is claimed because the source text does not provide one.

Why Choose This Product

If you need a screwdriver set with a stated insulated design, a 4mm cutter head, a 28mm cutter bar length, and chrome vanadium steel construction, this set matches those exact requirements. The nickel-plated blade surface is another concrete detail. The availability of six colour combinations gives a choice of appearance without changing the core specification. No price, pack count beyond one set, or competitor comparisons are stated or implied.