<http://schema.org/description>
"Ronstan's 19mm upright lead blocks are typically used in dinghy spars for control lines such as outhauls. When mounted in an inverted position, they are used as upright leads. The external tabs can be formed to fit the spar profile before fastening.They have UV-stabilized Acetal sheaves inside a grade 316 stainless steel load housing and can be removed."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.apsltd.com/single-standup-lead-block.html>