DURABLE CR-V STEEL - Made with cold-forged Cr-V alloy steel, the flexible head is heat-treated for extra strength and durability. Chrome-plated for rust and corrosion resistance.    ERGONOMIC NONSLIP T-HANDLE - Soft plastic-dipped T-handle creates a better, more secure grip and reduces fatigue, which matters especially for your long working hours.       FLEXIBLE HEAD - 360-degree rotation design enables it to be swiveled to the right angle for different types of cars. Get better leverage in these confined areas or awkward spaces.    SPRING LOAD & RUBBER INSERT - High-strength spring is heat-treated for better performance, keeping the head fixed. Built-in rubber insert grips the spark plug and achieves lossless removal.        
UNIVERSAL HAND TOOL - Widely applied to achieve lossless removal and easy installation of the spark plug on a car or motorcycle. Suitable for most of the models. Size: 16mm (5/8in).