The lock faucet key is made of metal and plated with brass on the surface, which is sturdy and durable, and the connection is firm. Prevent water leakage, anti-corrosion, practical, not easy to break, easy to grip and rotate, even if a few hard valves are screwed on, the key still does not deform. The lock faucet key adopts precise multi-layer electroplating, acid resistant and waterproof, and can be kept clean for a long time in humid environments. Square opening key, lock faucet key. 2Pcs internal size 6mm and its outer circle diameter is 10mm; 2Pcs internal size 7mm and its outer circle diameter is 12mm. NOTE: Please measure your inner diameter and outer circle diameter before purchase. Suitable for use in factories, gardens, public places, or homes, it is an excellent accessory for home bathrooms and kitchens, easy to install and carry., Manufacturer: Create idea