The Grivel Helix SPD Ice Screw has an integrated sling that allows you to climb quicker and with a lighter load. This makes protecting your pitch easier and faster, reduces the chances of dropping gear, and saves you the weight of a carabiner on every single piece. Unlike most ice screws, all of Grivel"s screws have reversed threads that increase their resistance against extraction for superior strength that you"ll appreciate when you"re on the verge of falling. Like the standard Helix ice screw, the Grivel SPD includes a large knob that makes placements easier, even in the hardest bulletproof ice.