Non-standard weights of class M1 are divided into three categories:
Hook weights with nominal value 1 g, 2 g, 5 g, 10 g, 20 g, 50 g, 100 g, 200 g, 500 g, 1 kg, 2 kg, 5 kg, 10 kg.
Slot weights with nominal value1 g, 2 g, 5 g, 10 g, 20 g, 50 g, 100 g, 200 g, 500 g, 1 kg, 2 kg, 5 kg, 10 kg.
Cylinder weights with nominal value 10 g (to max. 200 g), 100 g (to max. 2 kg), 500 g (to max. 20 kg), 1 kg (to max. 40 kg).