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A quick learner from Essex uk says:
Hi
I live and work in the uk and I am looking for these s150 springs .
I look after a contract that replaces these on a regular basis but now out of stock and can't find anyone to supply me.
Firstly can you suggest a uk supplier or can you get me a quote together .
I am looking for approx 20 x. 5,6,7,8 weights
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Bob from SWISCO responded:

Hello there! I actually am a postgraduate long-distance student at the University of Essex, so it's nice to hear from you. I am afraid I don't know of any supplier in the UK for these springs, but we do ship internationally. All costs for the S150-5 5 pound spring, S150-6 6 pound spring, S150-7 7 pound spring, and S150-8 8 pound spring are listed on their respective shop pages. When you set the quantities you desire, add these coils to your cart, and then click "Checkout" at the top right corner of the screen. Shipping options and estimates will be quoted when you input your area code during checkout. Let us know if you have any other questions. 

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