The Express is Black Diamond's fastest placing screw-in desperate situations, every second counts. Quick to bite and easy to crank in. Winner of Rock & Ice Magazine's 2008 Best in Gear Award. Retractable knob offers the ultimate in placing speed with uninterrupted 360-degree motion. Patented taper helps screw turn more easily. Needle-like teeth grab and cut even the hardest, coldest ice. Color-coded for length. 10 kN strength for all sizes.