The Groomi Tool spares kit consists of 3 spare combs which can be used to undo the quick release screw and 1 spare quick release screw.
The combs are made of stainless steel and are extremely durable. Each comb should last a few months at least even with regular use.
If you feel that the comb isn't performing as it should give it a good clean! The blades are not designed to cut, only to pull the dead hair from the animal,