↑ 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.