Check the Micro Ring color chart below for the color and size.

Alloy inner smooth/screw & Copper Micro Ring

Pls refer to the Micro ring color chart box and chosoe the color ans size you want .1000pcs/Box & 500pcs/box packing available .More details in your Enquiry ,More efficient in our cooperation .

4.5 x 3.0 x 3.0 mm,4.5 is diameter of outside,and 3.0 is inner diameter,3.0 is length;
4.0 x 2.7 x 2.7 mm,4.0 is diameter of outside,and 2.7 is inner diameter,2.7 is length;
3.5 x 2.0 x 2.5 mm ,3.5 is diameter of outside,and 2.0 is inner diameter,2.5 is length;

Huge:

6.0x4.5x4.5mm ,6.0 is diameter of outside,and 4.5 is inner  diameter, 4.5 is length;