【HIGH QUALITY BRASS】This Explosion-proof Slice is made of high quality brass, durable for use. 【10PCS ENOUGH FOR USE】10pcs explosion-proof slice are enough for use. 【FOR YONGHENG AIR COMPRESSOR PUMP】Perfect for YONGHENG TUXING Air Compressor Pump. 【WEAR-RESISTANT】Wear-resistant, corrosion-resistant, high strength and hardness. Exquisite craft, smooth surface. 【10PCS EXPLOSION-PROOF DISC SET】 Size: 8.5mm