Characteristic: The screwdriver is made of plastic handle, which is very easy to grasp and use. Non-electrostatic screwdriver with high-quality precision zirconia ceramic bit. Strong hardness, not easy to wear, fine workmanship. 4-piece set is convenient to use. No electromagnetic induction, electrical insulation and heat insulation. No eddy current loss at high frequency. Anti-static insulating ceramic screwdriver. No electromagnetic induction, electrical and thermal insulation. No magnetism and static electricity. 4 kinds of different drill bits, easy to use. The screwdriver of this ceramic drill is specially designed for high frequency circuit adjustment. Suitable for all kinds of inductors, semi-variable capacitors and semi-resistors. Suitable for high frequency circuit adjustment. Suitable for all kinds of inductors, semi-variable capacitors and semi-resistors. Describe Name: Non-inductive screwdriver batch adjustment set Specification: one-word batch CD-15 CD-20 CD-25 batch CD-100 Quantity: 4pcs/set Material: Ceramic+Plastic colour: blue+white Package Contents: 1 x Screwdriver set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.