Exact mesurments

Instructions for AI

If the size of penetrating (or other) elements is precisely defined, whenever the text first time refers to their size or when that size has changed, state the exact length/height, circumference, or diameter in inches or cm (use the same units as in prompt), avoiding general terms such as long, short, large, small, thick, thin, etc. Centimeters are given to the nearest 1/2 cm. Inches to the nearest 1/4 inch.