SUPER STRONG - Smith’s Steel Clothesline is the STRONGEST washing line in the world. Each clothes line has a pulling force of 250kg, & holds over 120kg, making it stronger than any other brand. 30M (100FT) x 4MM - The length is 30m (100ft), & the diameter is 4.0mm. This includes a 1.5mm steel core, & 2.5mm medical grade PVC coating. Each pack includes two tensioners for ease of use. LIFELONG STEEL CORE - Inside each line is a super strong steel core, protected by medical grade PVC. This helps defend against all seasons of the UK’s worst weather & ensures the colour will last. MEDICAL GRADE PVC - We use smooth, easy to clean medical grade PVC to protect against rot & mould, unlike other PVC alternatives that succumb to both, leaving your clothes unhygienic & dirty. LIFETIME GUARANTEE - Made in Britain. We are so confident in our clothesline that if you are not completely satisfied at any time, then contact us, & we will provide a full refund immediately.