At this moment we are not selling spare parts for our products.
You can find out using our “Distribution” section in main menu of our website. We will show you both regular shops, based on your location, as well as e-shops that provide deliveries to your address. Link to that section is here.
Every product line can be combined only within itself, eg. QS One products will not combine with QS Two products. The only exception for this rule is QS One Cart, which can be combined both with every QS One product, as well as QS Pro 500 and QS Pro 600.