The needle is food grade stainless steel Dosing is anodized aluminum-oxide Easy to use and clean The design of the makes it more Simply place the metal end of the mixer downwards and the needle side can remain stationary on the desktop or counter Equipped with twist, securely-connected, easy to connect and disassemble By using this dosage, you can activate the grinder through its front faucets to that the automatic dosing function of the machine works as expected The coffee dosing can stop wasting coffee and on the workbench, especially when using a coffee mixer