At the risk of being argumentative, I have used these for years to move pins around my basement. Now in all fairness the flooring is laminate and I am not moving them far but I have never had any failures or even near failures. Well I take that back!! I did use them to try and move a full 1” thick slate pool table at a clients home once and they had trouble. No trouble with pins. Thanks for the heads up. I have had a couple other pin type folks notice my casters and make the comment “great idea, never thought of that”. So great idea op!!!