Specification Brand : PerGar BulletPoint1 : Comprehensive Kit: This product is a comprehensive kit consisting of a primary coil, secondary coil, and soft iron core, ensuring a complete learning experience in understanding electromagnetic induction. BulletPoint2 : Educational Tool: Exclusively designed for middle school physics, it serves as an excellent teaching aid to visually demonstrate and validate the principles of electromagnetic induction. BulletPoint3 : Sensitivity and Precision: With its sensitive response and accurate performance, this product becomes an indispensable piece of experimental equipment for physics enthusiasts. BulletPoint4 : Durability: Manufactured from high-quality metal materials, this coil set guarantees sturdy, durable, and wear-resistant use that can withstand regular classroom use. BulletPoint5 : Specifications: The primary and secondary coils come with specified turns and precise dimensions with an inner diameter of approximately 11mm / 0.43in and 15mm / 0.59in respectively, offering stability and ease of use. ExternallyAssignedProductIdentifier1 : 0764331143040 ExternallyAssignedProductIdentifier2 : 764331143040 FinishType : Finish IncludedComponents : inc ItemName : Electromagnetic Induction Coil, Demonstration Primary and Secondary Coil with Iron Core Stick, Cylindrical Magnet Instrument for Physics Teaching ItemPackageDimensions_Height : 4 centimeters ItemPackageDimensions_Length : 10 centimeters ItemPackageDimensions_Width : 6 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : electronic-coils Manufacturer : PerGar Material : Material ModelNumber : K14-632-147 1860462-21-Y-UL NumberOfItems : 1 PartNumber : PerGarwpirfezh3640704 PowerSourceType : PowerSource ProductDescription : Feature: 1. This product is mainly composed of 3 parts: primary coil, secondary coil and soft iron core. 2. Mainly used in middle school physics to demonstrate electromagnetic induction and verify Lenz's law. 3. Sensitive enough, it is an indispensable experimental equipment and teaching instrument. 4. Made of selected high‑quality metal materials, sturdy and durable, wear‑resistant. 5. Physical electromagnetic induction coil kit, stable performance and easy to use.