This 316 Stainless Steel Windlass Anchor Chain has the same specifications as ACCO 1/4" BBB and complies fully with DIN 766 and has dimensions of "BBB", which will also fit older style "BBB" anchor windlasses. This chain also replaces the Suncor S0601-0007. This is for a six (6) foot length of chain and includes two quality shackles. This is a quality, high grade, marine stainless steel (AISI 316) DIN766 chain suitable for use in a windlass as anchor chain or other marine applications where high corrosion resistance is desired. Superb for anchor chain and general heavy duty work in a marine or chemically harsh environment. This chain will fit many standard windlasses. Please consult your windlass manufacturer model manual for the ideal specification for your windlass. The 3 important figures for smooth running or your windlass is the Diameter (DIA), Inside Length (IL) and Outside Width (OW). More details are in the spec table below, this chain is 7*22*25 (DIA*IL*OW). As DIN766 is a metric specification we list the specs in mm, the imperial equivalent of this chain is 1/4"*0.86"*0.98". The link size is 7mm or 1/4" imperial equivalent. Every 0.9m links are hallmarked and stamped with 316.