<https://tradeplumbingsupplier.co.uk/products/6987452154050>
<http://schema.org/description>
"Flexible rubber drain down hose supplied with 2 x velcro straps and a thumb screw hose clip suitable for draining down central heating systems.NOT suitable for pressurised systems.20mm x 50m"
<https://tradeplumbingsupplier.co.uk/products/ddh50>