Features Multi-Purpose Testing Tool: Ideal for various applications, these clips are perfect for electrical testing and circuit experiments, enhancing your versatility in the lab or field Exceptional Conductivity: Crafted from high-quality brass, these clips ensure excellent conductivity, providing reliable performance for extended use in all your electrical projects Safe and Reliable Design: Featuring insulated construction with weldable wire, these test clamps guarantee safety during operations, minimizing risks while you work Superior Specifications: Rated for 30A current and 1000V voltage, with a 20mm opening and 4mm rear hole diameter, these clips meet rigorous standards for professional use User-Friendly Operation: Easily connect to your test equipment and begin testing immediately, streamlining your workflow and boosting efficiency in your electrical tasks Features: 1、Miniature measuring wheel with telescopic handle for measuring distances from 0 ？ 9999.9m. 2、TPR material, wear？resistant, anti？deformation. 3、Thick anti？skid wheel. Suitable for accurate measurements of roads, sidewalks or land. 4、Large distance measuring wheel, foldable handle, sturdy and . 5、High？accuracy measuring wheels are ideal for surveyors, construction workers, farmers, etc. 6、The mechanical dial increases as it moves forward and is subtracted when it is reversed. 7、Measuring accuracy is plus or minus 0.5%. Specification: Item Type:Measuring Wheel Material: Aluminum Alloy + TPR Plastic Measuring Length: 0 - 9999.9m Error: ≤0.5% Total Length (Adjustable): Approx. 450mm - 950mm Wheel Circumference: 0.5m Handle Diameter : About 30mm / 1.18in Wheel Diameter : 159mm / 6.26in Shrinkage Size: Approx. 45 x 16 x 14cm / 17.72 x 6.3 x 5.51in Package List: 1 x Measuring Wheel Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List 1 x Measuring Wheel