Description: Suitable for physical experiment Made of premium iron and plastic, high quality, durable Helpful and useful Easy to operate, accuracy, safe 100% brand new Specification: Overall Size: Approx.15*6*4cm/5.91*2.36*1.57 inch Wire Length: Approx.160cm/62.99 inch Clamp Size: Approx.4.5*1.5*9cm/1.77*0.59*3.54 inch Hammer Size: Approx.3.5*5cm/1.38*1.97 inch Paper Tape Width: Approx.1.7cm/0.67 inch Material: Iron and plastic Color: White Package Includes: 1 Piece Electric Spark Timer
