brand new and high qualityFeatures:1. Can be applied to electrical experiment for midlle school, technical secondary school and other proper situations.2. Suitable for verifying parts of Ohm's law.3. Can be used to measure unknown resistance.4. Can serve as great teaching and exprimental equipment.5. for Ideal for adjusting current in need in the way of entering to a circuit as a known resistance.Specification:Material: IronType: Resistance BoxColor: BlackResistance Obtainable: 0 ohm to 9999.9 ohmSize: 14 x 10 x 5cm(5.51 x 3.94 x 1.97in)Quantity: 1 PcNote:1. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package includes:1 x Resistance Box