... tools are easy to take to the work place, reduce operator fatigue, and minimize capital expenditure.» Strong, reliable fastenings, independent of operator skill.» Vibration ... .» No dents, dimpling or wrench marks on the surface of usage. » Blind rivets hold securely in thin or thick, soft or hard materials ... , 3.2 mm, 4 mm, 4.8mm, 6.4mm good price aluminum/steel pop rivet