Cordelette vs accessory cord Make a double fisherman knot. There is a reason why SAR uses prussiks with most ropework. However the 5mm accessory cord looks to be the same as any other 5mm accessory cord, and it seems like many use this for prusiks. com FREE DELIVERY possible on eligible purchases This item: Sterling 7mm Accessory Cord . 7mm - 13 kN. 93 Tensile Strength: 2,473 lbf (11 kN) Sheath Mass: 46% Elongation: @ 300 lbf = 8. A nylon sheath with a nylon core accessory cord for a multitude of applications limited only by the imagination. Top quality, great selection and expert advice you can trust. section of seven- to eight-millimeter Perlon accessory cord for building anchors. 1 out of 5 stars. ujvnsfjttzghdwnnukfrnnkorowkgsffqdbipvvzknjxvglkntvbclqxljhliiomtlokrawtdlzlnylkp