The specific gravities of the basic yarns are as follows: Nylon 1'14, Terylene 1.38, Polypropylene 0.91 and Polyethylene 0.95; whereas manila and sisal are both about 1.5.
Ezi chaziweyo zinokunyaniseka kwewulu zezizilandeleyo iNayilon, 1:14 Terylene, 1:38 Polypropylene, 0.91 kunye ne Polyethlene 0.95 apho iManilla ne Sisal zombini zikwi 1-.5.