These hooks and carabiners lock the gate in a manner that they won't open from movement and pull from the attached cord/ring.
These have tested quality construction that is withstands constant use. You can use these without worry of breakage soon after purhasing them.
13.90 €/piece Black Diamond Hotforge Screwgate Carabiner An easy to clip and clean keylock locker. Available in: Black and Grey
13.90 €/piece Black Diamond Oval Keylock Screwgate Biner This symmetrical biner riffs on the classic model, but incorporates a snag-free keylock design and adds the screwgate for lockin Available in: Aluminum and Black
13.90 €/piece Climbing Technology Pillar Steel SG Oval Screw Carabiner This Oval karabiner is made of steel ideal for top ropes. Especially useful in adventure parks or for other work at heights use.
16.50 €/piece Edelrid HMS Strike Screw II Carabiner With a very compact carabiner body, low weight, small form and Keylock gate, the HMS Strike is ideal for alpine climbing. Available in: Oasis Green and Silver
14.90 €/piece Edelrid Pure Screwgate Carabiner Small and lightweight screwgate carabiner with Keylock gate. For climbing and for attaching gear. Available in: Black, Lime Green and Silver/Turquoise
2.50 €/piece Nite Ize S-Biner MicroLock Accessory Carabiner All the Usefulness of a Single-Gated Carabiner... Times Two. Plus it locks!
5.90 €/piece Nite Ize S-Biner SlideLock #2 Steel Accessory Carabiner With its two strategically designed plastic sliders the S-Biner SlideLock allows you to close the gates and lock them behind you Available in: Black