How big is Helico?

The Helico pair is 100mm x 20mm x 25mm. 

Helico MK2 weighs 50g (1.8 Oz). 

Helico MK3 Nylon weighs 53g (1.9oz). 

Helico MK3 Brass weighs 108g (3.8 oz). 

Helico MK3 Stainless Steel weighs 106g (3.7oz). 

Helico MK3 Titanium weighs 72g (2.5oz).