Let me start by saying these nylon cable glands *feel* premium right out of the bag. The PA66 plastic has that satisfying dense texture, and the rubber gaskets are noticeably thicker than some no-name brands I've tried. When you tighten them down, that 'click' feedback is legit - you *know* when it's properly sealed.

IP68 waterproofing? Absolutely delivers. I tested these on outdoor junction boxes during heavy rain (mounted vertically to simulate worst-case drainage), and zero moisture creep after 48 hours. The compression design grips cables without crushing - my 8mm marine wiring showed no jacket deformation even after repeated adjustments.

Now the elephant in the room: thread sizing. Like another reviewer mentioned, these have 3/8" NPT threads instead of the more common 1/2" for knockout holes. I learned this the hard way mid-project! They work beautifully with adapters or properly sized enclosures, but double-check your application before ordering.

The anti-vibration security slot is genius - no more finding loose glands after equipment transport. I particularly love using these on mobile solar setups where vibration would normally wreck cable entries.

Pro tip: That 'don't fully tighten before installation' note matters! Leaving about 1/4 turn loose during threading prevents cross-threading issues with nylon bodies.

Final verdict? Excellent build quality let down slightly by niche threading. If your project matches these specs, they're easily among the best sub-$1 glands I've used. Just keep that thread size in mind!