Ancra Cargo 4″ x 20′ 2 Ply Tapered Loop Eye to Eye Lifting Sling Size:4″ x 20′ Type 316 Stainless SteelBest for Size:9 x 9 x 3 Type 316 Stainless SteelBest for metal to wood applicationsFor use near water and high moisture environmentsTwin lead threads for fast drive timeHi Lo threads for increased holdBonded EPDM washerPackaged in convenient re sealable bags of 250 Constructed from durable nickel chromium steel These qualities add up to make the double ply lifting sling a strong yet lightweight alternative to chain or wire rope double ply lifting sling complies with WSTDA WS 1 Type IV Wrapped Bearing Point Web Sling standards and includes a visible blue polyester marker thread and industry compliant WSTDA tri lingual sewn warning tags with a permanent placard affixed to webbing