Stainless steel
TOP: (1.3), (1.7), (2.1), (2.5), (3.3), (4.1), (5.1), (6.1), (8.1), (10.1),
BOTTOM: (1.0), (1.0), (1.2), (1.6), (2.0), (2.4), (3.2), (4.0), (5,0), (6.0)
With drilled hole at the end for easy insertions of screwables threads, e.g. flesh tunnel