Features: The needle is made of high-quality food grade stainless steel. Dosing Ring is made of anodized aluminum-oxide. Easy to use and clean. The design of the tumbler makes it more independent. Simply place the metal end of the mixer downwards and the needle side can remain stationary on the desktop or bar counter. The coffee dosing ring can stop wasting coffee and prevent chaos on the workbench, especially when using a coffee mixer. Equipped with twist lock, securely-connected, easy to connect and disassemble. By using this dosage ring, you can activate the grinder through its front faucets to ensure that the automatic dosing function of the machine works as expected. Specifications: Material: Metal Color: Black/Silver Size: As Shown In The Picture Package Includes: 1x Coffee Stirrer 1x Dosing Ring note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.