The Economy Bolt Seal is C-TPAT and ISO 17712 compliant with a pull strength in excess of 2,200 Lbs (1,000 Kgs).  The pin is steel and the barrel is ABS.  Only the barrel is numbered.

Overall pin length: 3.15"     Pin diameter: 0.31"     Operating length: 2.1"     Barrel length: 1.38"     Barrel diameter: 0.9"     Total length when engaged: 3.84"