The WD-40 Specialist Penetrant with Flexible Straw is designed to get into hard-to-reach crevices, threads, and seams to break up rust and bonds that hold stuck parts together. The product prevents rust and corrosion from reforming and leaves behind a lubricating layer. The flexible straw allows technicians to apply the penetrant without taking vehicles apart to reach the right area. The flexible straw is ideal to reach an exhaust manifold, suspension fastener, compressor bolt, alternator, or brake caliper while also limiting overspray. It is also 50-state VOC compliant.