Here's what other sites are saying:
For dry tooling and extreme ice climbing, Petzl's Dry pick is compatible with the Quark, Nomic, and Ergo ice axes. This pick tapers from 4 to 3 mm and easily penetrates exceptionally cold ice while teeth on the lower allow hooking and teeth on the upper make reverse positions easier.
- Mountain Gear
Petzl Alpine & Ice Climbing DRY Pick Replacement Head for Ice Axes Black U19 DRY U19DRY. Tapered at the tip (3.3 mm) it easily penetrates the coldest ice. Teeth along the lower edge near the shaft help when hooking on rock or over ice bulges. The teeth along the top edge help stabilize the tool when cammed in an inverted position (stein pull).
The Dry Pick (4 mm thick) is specifically designed for dry tooling and extreme ice climbing. Tapered at the tip (3 mm), it penetrates the coldest ice easily. It has teeth on the lower part for hooking and on the upper part for reverse positions.
Description of Petzl Dry PickTake you mixed climbing to the next level, the Petzl Dry Pick is specifically designed for steep dry tooling, the Dry Pick provides plenty of stiffness by tapers to 3 mm at the tip so you can get one-swing sticks in the ice shattering huge chunks in cold temps. The hooked tip holds on the smallest edges and serrated top teeth allow for a increasingly complex tool placement on the really steep routes. FeaturessteelCompatible Petzl Quark, Nomic, and Ergo ice toolRateing T typeWeight 4.5 oz
- US Outdoor Store