The DUROknot part numbering system is simple.
Lets take an example: Dk3 x 80
Dk (Approx Breaking load in 1000s of Kgs) x (Pin to Pin Dimension)
"Dk" tells you it is a DUROknot soft shackle.
"3" tells you the breaking load for this unit is about 3000kgs.
"80" is the Pin to Pin Dimension of the closed shackle. This is dimension A on the product diagram.
See our product chart for more details: