I personally would stay away from the two piece ones that split in the center. People give away the lock ring type, so I would switch to those, they are safer. If for some reason you don't want to switch, as the others have said, when they were new there was no problem, so make sure they are in great shape, and treat them with respect.

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-