"Material: Steel per QQ-S-634-1020; Finish: Cadmium Plate, Type 1, Class 1, per QQ-P-416. Overall Dimensions: 2.375 inches OD x 1.437 inches LG. Features: Four holes with a diameter of 0.265 inches through the part, counterbored to a depth of 0.25 inches, equally spaced; four slots with a diameter of 0.312 inches and a length of 1.062 inches."