I just got 2 SK7s in the mail. Both o-rings were broken. Easily replaced - even though they don't supply extra rings. The split ring is flimsy and I'll use a real one. The carabiner isn't the greatest either. No lube on the threads - again, disappointing but easily fixed. The rest of the fit and finish is fine and I like the different knurling pattern, ss bezel ring and grey color. I like AAA lights - small and good gifts. My 16 year old son grabbed one - the first time he's taken a light from me. Glad I got 2!