Hill is a UK engineering company specialising in the manufacture of attachments for construction machines. With an uncompromising commitment to safety, we are the recognised forerunner in industry compliance, a position underlined by the launch of our new Tefra product – the single most significant progression in coupler safety over the last ten years. A fully automatic pin grabber coupler, with a patented and unique secondary locking system, Tefra is fully compliant with all current and expected future legislation.We think it is the safest pin grabber coupler available today. Hill - leaders in attachment safety.