↑ 638: Unmarked Ice Piton
- Made in Russia? [1980s?].
- Weight: 84 g.
- Overall Length: 178 mm.
- Effective size: 115x16 mm.
- Drive in, screw out tube with ice relief slot.
- Titanium alloy.
- No markings.
- The fine thread allows placement and removal by turning with little torque required.
The fineness of the thread makes this a slow process. - The fine butressthread allows driving to speed placement.