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I have been using KOLDKUTTER screws for a couple years. they are screws for racing motorcycles on the ice. each screw has 6 points do to it's design.
a bag of ( 250 ) 3/8" screws run about $20..
No they don't last forever. yes I have had 1 or 2 pullout. when they dull it takes 10 minutes to change them all out and the cost is minimal..
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