The Ronstan SHOCK block is a lightweight, high load capacity alternative to a traditional block. They are designed primarily for ‘soft attachment’; spliced to a line end or lashed in place. The elongated attachment aperture is also ideal for webbing attachment, ensuring the intended orientation is maintained. With no moving parts, SHOCKS provide ultimate durability and are maintenance free. They are resistant to sand, grit and salt and their gentle 3-dimensional geometry is kind on lines but is strong enough to cope with poor leads. The clever design and exacting finishing also provide excellent free running at moderate changes of angle. They function just as well with hi-tech uncovered braids as with traditional double braids. The XL SHOCK will accept lines from 3.0 - 10mm and webbing up to 10mm wide. For smaller attachments, see the RF8080 standard size range. XL SHOCKS are available in two colour options to aid rigging organisation, and with several attachment options, including webbing, pigtail, lashing and dyneema links. Feature summary: - Performance & versatility - Ultra lightweight - Ultra compact - Durable - Colour coded - Impact resistant - Small line optimised - High load capacity - Poor alignment tolerant - Soft attachment compatible - Grit & salt resistant RF8081R includes a single unit.