These are 4 different sizes of Quick Release Martingale Collars 1/2" wide which is called Medium Metallic.

The Pictures to the right are attached to the "add to cart" buttons under this text box.

Metallic Collar 14 inch QR Mart $8.00
Medium 15 inch Metallic QR $8.00
Metallic Collar 16 inch QR Mart $12.00
Metallic Collar 18 inch QR Mart