Specifications:Material: Aluminum & Brass & PlasticQuantity: 102Pcs (100pcs valve core with 2 tool)Bear the oil, bear the impact, bear the corrosion, watertightness. 【Material】High quality car air conditioner valve core for R12 R134a air conditioning accessories, made of high-quality aluminum and brass, which can bear the oil, bear the corrosion, watertightness.