Specifications:They are used for resistance adjustment inside equipment or printed circuit boards.There are 10 models of resistance value, which can fully meet your need.This kit is equipped with a transparent box to store the potentiometer, which is convenient and practical.Made of high quality iron and carbon, they are durable, stable and easy to use.Item Name: PotentiometerMaterial: Iron, CarbonQuantity: 50PcsFeatures: Adjustable, Durable, Easy to UseBox Size: 13cm x 6.5cm x 2.3cm/5.12" x 2.56" x 0.91" (Approx.)Notes:Due to the light and screen setting difference, the items color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:5 x 100 Ohm (101) Potentiometer5 x 200 Ohm (201) Potentiometer5 x 500 Ohm (501) Potentiometer5 x 1K Ohm (102) Potentiometer5 x 2K Ohm (202) Potentiometer5 x 5K Ohm (502) Potentiometer5 x 10K Ohm (103) Potentiometer5 x 20K Ohm (203) Potentiometer5 x 50K Ohm (503) Potentiometer5 x 100K Ohm (104) Potentiometer