ISC Professional Hand AscendersISC Hand Ascenders are sleek & ergonomic by design. They are machined from high strength Aluminium extrusion and are suitable for heavy duty use. All ISC Hand Ascenders have both primary and secondary attachment holes, are fitted with stainless steel cams and come with moulded, comfort grip handles. Technical Information Rope diameter range (mm) 9 13 Serial numbering As standard Cam material Stainless Steel Body finish Anodised Approved Standards