【14MM Spark Plug Socket Extension】 3/8" driver,12-inch total length and 360-degree rotatable function allow you to better use and perfect work in narrow or inaccessible places. | 【Magnetic Spark Plug Socket】 contains a magnet with strong magnetic force, which can firmly fix the spark plug so that it is not easy to loose and fall off when you install/remove the spark plug. | 【Excellent Spark Plug Socket Design】The spark plug socket is extended and adopts an advanced 12-point design, which is thinner than the standard spark plug socket. The handle design improves friction and prevents sliding. The mirror surface is completely polished and the surface is chrome-plated to prevent rust and corrosion. | 【Chrome-Vanadium Alloy Steel Spark Plug Sleeve】 The spark plug sleeve compatible with BMW is made of quenched heat-treated chromium-vanadium alloy steel, which has good rust and corrosion resistance and can maximize the service life of the product. | 【Compatible with BMW Spark Plug Socket】 The extended spark plug socket set is compatible with BMW 1 series (E81 / E87-N43B), 3 series (E90-N43B) and 5 series (E60-N43B).

【Portable Multifunctional Electrical Tester】The car circuit tester is suitable for the diagnosis of all 6V to 24V automotive electrical systems and can work well on cars, trucks, boats, trailers, motorcycles, and airplanes. The portable and ergonomic design of the automotive power probe is convenient for you to use in narrow areas; the 4-meter extension cord is helpful for mobile maintenance work; the clip with strong bite force is not easy to fall off, providing you with a better experience. | 【Power Probe for Polarity Test and Continuity Test】The power probe is made of insulating material and high-quality stainless steel, which can help you quickly identify the positive and negative polarity of the vehicle cable and plug. When the power tester touches the positive pole, the LED should be red; when it touches the negative pole, the LED should be GREEN. The electric circuit tester is also used to check the continuity of switches, relays, diodes, fuses, and circuits. | 【Electrical Tester for Component Activation and Testing】For professionals or car enthusiasts, this continuity tester is a great tool. The automotive short circuit tester can activate the components in/out of the vehicle's electrical system. The LED indicator and buzzer alarm can easily test and check whether the components are defective, or whether the rated current of the component is higher than the rated current of the tester. | 【Automotive Circuit Tester for Grounding Test】The design of the circuit breaker finder is perfectly designed and feels comfortable. It is equipped with a 4M extended detection line, covering the front to the rear of the vehicle and easily detecting the entire vehicle circuit system. The automotive circuit tester kit has a grounding alarm device. If the LED indicator turns green and the buzzer sounds, it means that the grounding is good. If it is not, the LED remains red and there is no beep. | 【Highly Sensitive Power Probe for Tracking and Locating Short Circuits】The electrical tester uses advanced high-sensitivity probes to provide you with fast and accurate detection. Using the continuity tester can save a lot of time to troubleshoot the car wiring circuit, to quickly and accurately find the faulty wire and its fault point. | 【Circuit Tester Made of ABS Material with Overload Protection Function】The ABS material is moisture-proof, high temperature resistant, and impact-resistant, so that the power probe circuit tester has a long service life. The electrical system tester has an overload protection device. When the current exceeds 7A, the internal circuit breaker of the equipment will automatically trip and issue a buzzer alarm to protect the safety of the equipment and users and reduce unnecessary losses.