1. ALUMINUM ALLOY The brake bleeder tool is crafted from durable aluminum alloy, ensuring longlasting performance and reliability even under heavy use. Its wear resistance guarantees consistent functionality over time. 2. COMPACT DIMENSIONS With a length of 39.3 mm (1.54 inches), a button diameter of 0.7 inches (17.9 mm), a screw diameter of 0.49 inches (12.5 mm), and a seal diameter of 0.12 inches (3.2 mm), this tool is compact and precisely engineered to fit effortlessly into tight spaces. 3. EASY INSTALLATION Installation is effortless—simply remove the brake light warning switch from the valve and it with the bleed tool by screwing it into place. This straightforward process ensures quick setup and immediate use. 4. VERSATILE COMPATIBILITY Designed for a wide range of vehicles, this tool is especially compatible with those equipped with DISC/DRUM PV2 and PV4 AC 1721371 1721353. It's an essential addition to any car toolbox.