The DeWidget fits on top of your stem and provides a point to mount a toptube bag (gas tank bag). As well as providing a secure mount point in the right position, the deWidget disconnects the rotation of the bars from your strap and mount point so the bag stays firmly attached without it being pulled and moved around as the bars turn. If your bag has a strap normally designed to wrap round your stem, you can add an additional strap at 90º to that one to fit to the deWidget. A lot of bags come with a strap that's long enough to cut down to make this extra strap so you don't need to buy anything extra.
There's a little bit of extra info on drJ0n's blog that you may find useful here :
From January 31st 2021 all non-UK sales will be handled slightly differently.
Please read this note if buying from outside the UK.
All our published prices include VAT (UK sales tax @ 20%). If you are buying from outside of the UK, this 20% sales tax will be removed on your basket page when you enter a non-UK shipping address. For example, if you purchase something which is published at £120, when you enter your shipping address, if you are outside of the UK, the price you pay will drop to £100.
It is likely that you will need to pay the sales tax in your country when the items arrive. The mechanism for collecting this sales tax varies by country but in most cases it will be payable to the courier delivering the package. The amount of sales tax you pay also varies by country but in most cases is around 20%. Note that this sales tax is a government sales tax and isn't something that Wildcat ever see or are in control of. In some countries you may also be charged import duty if your order is over a certain amount. The duty rate varies from country to country and from product to product and in almost every case is substantially lower than the VAT rate (approx 2%-6% in most cases we see).
If you are in the EU and purchasing a product that is manufactured in the UK (all of the Wildcat and drj0n branded goods) then you should not have to pay import duty. We will mark the customs documentation with the correct 'Rules of Origin' information which means there is no duty to be paid on goods manufactured or originating in the UK and being exported to EU member states. If your courier or local tax collection agency have charged you import duty, then you should appeal this.