Bare Copper Wire – 0.90 mm Diameter (20 SWG), 250 g Reel

This Bare Copper Wire is supplied on a 250 g reel and manufactured to a 0.90 mm diameter, equivalent to 20 SWG (Standard Wire Gauge). Strong, flexible, and highly conductive, it is ideal for electrical experiments, classroom circuit construction, and general laboratory use. The bare finish ensures excellent conductivity and easy connection to terminals, crocodile clips, and binding posts.

Durable and easy to unwind, this reel provides a reliable supply of copper wire suitable for repeated handling in busy school science labs.

Key Features

• 250 g reel of bare copper wire
• 0.90 mm diameter (20 SWG)
• Excellent electrical conductivity
• Strong, flexible, and easy to work with
• Suitable for winding coils, constructing circuits, and demonstration setups
• Ideal for general lab work, repairs, and prototyping

Ideal for School Science Lessons

Perfect for KS3–KS5 physics, this copper wire supports a wide range of practical activities, including:

• Making electromagnets and induction coils
• Constructing simple circuits
• Investigating resistance, current, and conductivity
• Demonstrating principles of magnetism and electricity
• Connecting components in experimental setups

A versatile, essential resource for any school physics or electronics laboratory.