Review on Manfrotto 196B-3 143BKT 3-Section Single Articulated Arm with Camera Bracket (Black) - Ultimate Tool for Professional Camera Flexibility by Lance Alvarez

The 1kg rating is pretty optimistic unless you want to wait 30 seconds on each touch for the vibration to subside. Also, the bolt that the wing nuts thread onto is the original bolt and you cannot get a replacement unless you order the entire clamp assembly. You could have just poured plastic under the bolt's hex head to keep it from turning when the wing nut is tightened, but no. Instead, they make a custom bolt with lugs on the shank. I would like to speak to the engineer who made this decision.