UPK-D4 Eclipse Ring2 SS

$279.95 $315.20

This UPK-D4 Eclipse is made in 100% HARDENED STAINLESS STEEL

A minimal guard version of the Pocket Sai. The guards have been reduced to provide the optimal amount of grip for blade retraction.

Optimized for throwing and melee impact, made in 440A high carbon martensitic stainless steel with a hardness of HRC: 45 makes a tough resilient stainless. It can take extreme abuse and offer a point of bending where harder alloys will break, making this ideal for throwing when the worst abuse takes place.

  • EDC Defensive Implement
  • The Eclipse is self-sheathing making them easy & safe to carry
  • Retractable Blade automatically Locks at either position (open/closed)
  • Sharpened & Unsharpened options available

What’s Included?

x1 Eclipse Ring2 SS with Clip


  • Blade Milled from 440A Stainless Steel
    • Heat Treated to 40-45 HRC
  • Handle made in 440A Stainless Steel
    • Heat Treated to 40-45 HRC
  • Custom Hardware (Button and screws) made in 450 Stainless steel
    • Heat Treated by Age Hardening to the H900 condition HRC 45
  • 301 Stainless Steel Springs
    • Cold work Hardened to a Spring Temper


  • Extended length: 12.5 inches (317.3 mm)
  • Collapsed length: 8.1 inches (206.5 mm)
  • weight: 7.3oz

Important Reads:

Double edged vs Un-edged : ordering a double edged version will be completed in 48 hours with a edge grind that is brought to 1000grit wet silicone carbide and polished.

Optimized material for throwing, this implementation was done in 440A, a high carbon martensitic stainless with a reduced carbon content then its 440B and 440C relatives, this makes a tougher resilient stainless in exchange for reduced hardness. Heat Treated to HRC 40-45 these are still harder then most the objects around you, but will take extreme abuse and offer a point of bending where harder alloys will break, making this ideal for extreme impacts and the worst abuse.

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