Tylaska Shackles – Spool Shackle S12

This revolutionary, patented, shackle from Tylaska replaces the age-old knot! Unlike a conventional knot, the Tylaska Spool Shackle™ will not jam up and remains easy to fasten and unfasten even after loading up to the tensile strength of the line.

The S-Series Tylaska Spool Shackle™ is machined from high-strength aluminum. The P4 version of the Tylaska Spool Shackle™ is made of high-impact polycarbonate. Both versions have an exceptional strength-to-weight ratio. The key is that the line itself supplies the strength while the shackle simply redirects the force. The ease of unfastening after loading is equally amazing. Based upon the concept of “breaking the back” of a bowline knot, the line can be rolled back and taken off even after it becomes “stiff as a wire” from tension.

The Tylaska Spool Shackle™ works with both conventional and hi-tech lines. All that is needed is a looped end. This can be a pre-spliced loop, yet-to-be spliced loop, or simply an overhand knot loop. A retaining pin allows for the shackle to be removed or transferred to other lines. An optional “O” ring slides over the line to provide a secondary “lock” against loosening during the most severe flogging situations.

A Keeper Pin and “O” Ring come with each spool shackle in it’s corresponding size.

  • Machined from high-strength aluminum.
  • Ideal for halyards, genoa sheets, etc.
  • Termendous strength.
  • Flog-proof.
  • Easy to fasten & unfasten.
  • Will not jam up.



Weight: 1.6 oz

Workload: 6,000 lb

Breaking Strength: 12,000 lb

Line Size: 5/16 – 3/8

Additional information

Weight 1 lbs
Dimensions 2 × 2 × 2 in