All J Silk Agricultural products are designed and manufactured in our modern manufacturing facility in Hertfordshire. Because we produce all our products in our own facility here in the UK we can alter any of our products to your individual requirements. Only the highest quality materials are used. Grade S355 for all hollow sections and S275 for plate. DOMEX and HARDOX plates also used for high stress and wear components. JSA 20ton Log Splitter (Painted). The JSA heavy duty log splitter is a heavy duty log splitter for farmers and contractors requiring a large quantity of fire ...