King Koil Elixir-10Y

"Features:

2.4 mm Bonnel spring are hour glass shaped with knotted end rings at top and bottom front sides. It is heat treated for better support and resilience.
Specifications:

Height (approx) 26 cms (+/- 1Cm)

Innerspring:

Bonnel Coil; 2.4 mm; 5 turns;

135 mm coil height; 86 mm coil

diameter. heat treated for rust

proofing and stress relief. 4mm

dia Border Wire;"