Made in the USA. Nickel silver material covers. These are not made out of brass like many economy covers. Available in Chrome, Nickel, or Gold plating. 50mm(1.97) Pole piece spacing. To determine your spacing measure center to center of your 2 outside pole pieces. 

Please note: Raw nickel silver covers will have small scratches, minor imperfections, and sharp edges due to being un-plated.