64"/2.5lbs Aluminum Camera Video Tripod, Compact Vlog Camera Tripod Flexible & Portable 17.6lbs/8kg Load (K234A0+BH-28L)

SKU: KF09.101

A
yep, no problem 
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yes, If you tighten the screws strong enough, yes. 
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I have a Canon and with 300 that's just the way it is.