Brass is beautiful and will never rust.This collar has a solid brass roller buckle, brass welded D ring, a brass ID plate and brass hole inserts.So classy!This made to measure collar has a Herm Sprenger stainless steel clip and D ring. The clip can be released with one hand and has a slider that stops it being opened accidentally. It is very easy to use and will never rust.The collar also comes with a stainless steel engraved ID tag. Please fill in the box with your ID details when ordering. Write it exactly how you would like it to look with any capital letters and spacing. Mistakes cannot be rectified once it'sengraved. Up to 4 lines of 15 characters inc spaces only please