Quick view Add to Cart Stainless Steel Split Key Ring 1/2 Inch Diameter (USA) Use Where corrision Is A Factor, Will Not Rust. Actual outside diameter is .670". MADE IN USA./// 1/2" Diameter stainless steel split key rings SOLD EACH. Use where corrosion is a factor - Type 304 Stainless Steel keyrings will not rust. Our best... Our Item #: KR-9335-001 $0.56 $0.48 $0.48 View Details