Stainless Steel 316 Marine Grade Cable with Plastic Cover $10.50 Stainless Steel Cable with Plastic Cover This is the exact stainless steel cable we used for the shop’s rental safety lanyards in our dive center in Panglao. This marine-grade stainless steel 316 cable is because of its diameter of 2mm cable and 4mm plastic outside, perfect for the use of freediving lanyards. Stainless steel 316 cables are durable, have a high corrosion protection grade, are stable and are fatigue, weather and heat resistant. Don’t make your safety lanyards from any lesser quality materials than the marine grade 316 stainless steel cables. The marine-grade stainless steel 316 cable is cut per meter.