You can buy similar products from pointnorth.co.uk, as they are not boat people they are a bit cheaper
stock number lb3 £1.30 for stainless
stock number lb2 £0.10 for plastic
http://www.profabrics.co.uk/shop/show_product_info.php?id=LB2http://www.profabrics.co.uk/shop/show_product_info.php?id=LB3Never used them so I can't vouch for how suitable they are.
Gareth