Form A without screw-on hole, without anti-slip plate
Form B without screw-on hole, with anti-slip plate
Form C with screw-on hole (closed), without anti-slip plate
Form D with screw-on hole (closed), with anti-slip plate
Form E with screw-on hole (open), without anti-slip plate
Form F with screw-on hole (open), with anti-slip plate
1) From plate Ø 80