http://www.impexindustry.com/index.php?route=product/product&product_id=511 http://www.impexindustry.com/image/data/logo.png http://www.impexindustry.com/index.php?route=product/product&product_id=511 Impex Industry http://www.impexindustry.com/index.php?route=product/product&product_id=511 Fig. 3, 8 mm diameter]]>