The Hammer for the Quark Nomic Ergo Ice Tools by Petzl. The trapezoidal shape of this hammer's contact surface is specifically designed for ice Climbing axes. Final SALE: For safety reasons, we cannot accept returns on load-bearing Climbing equipment. Sorry for being so mean. The Specs Weight: 58 g Pick Type: T Material(s): Steel 4 mm pick tapered to 3 mm at tip Case Quantity: 10 Compatible with: Quark ice axes (U19 M2, U19 P2), NOMIC (U21, U21 2, U21 3), Ergo (U22, U22 2) Certification(s): CE, UIAA