M5 cube star with (4) 1.0 mm diameter ruby balls, stepped carbide stems, 11.0 mm diameter aluminum bases, 14.3 mm square aluminum cube body, and stainless steel mounting screw.  Minor carbide stem diameter is 0.7 mm, major diameter is 1.0 mm.  Length between stylus tips is 45.0 mm.  Weight is 8.50 grams.