Description Hide Description- Show Description+ 6mm Base Metal Brass Outer Dimensions 7.3 x 5.3 x 5.3mm Inner Dimensions 5.3mm Hole Size .9mm Country of Origin USA Sold 6 Each 8mm Base Metal Brass Outer Dimensions 9.8 x 4.9 x 4.9mm Inner Dimensions 8mm Hole Size 2.1mm Country of Origin USA Sold in packs of 6