KNS Precision MBUS Pro Sight 6 Pack Black Sight Pack-MBUS. All post sight bodies are steel with black oxide finish. There are 6 sight configurations: -3 square postdiameter: .034 .052 .072 -3 round ball postdiameter: .034 .052 .072 .052 Ball Post Pictured In MBUS PRO Front Sight Specifications for KNS Precision MBUS Pro Sight 6 Pack: Manufacturer: KNS Precision Included Accessories: 3 square post-widths .034 .052 .072 3 round dot post-diameter .034 .052 .072 Country of Origin: USA Color: Black Package Contents: KNS Precision MBUS Pro Sight 6 Pack KNS Precision Sight Pack-MBUS: MBUS Pro Sight 6 Pack Black