simultaneously locks at the highest tension position—the lever won't slip to the off position, even on the loosest tension settings. The MUS80A is totally secure when you want it on, and easy to switch off when you want it off. Tama MCS70B butt The MCS70B uses the basic butt assembly of the MUS80B. Large 6mm screws provide improved durability. Tama Hold Tight washer The Hold Tight washer's cup-shaped stainless steel washer contains a rubber ring, so the tension rod pushes both the cup washer and the rubber ring. Normally, vibrations will eventually loosen the tension rod. But the softness of Hold Tight's rubber ring keeps it in contact with both the tension rod and the hoop at all times and maintains friction between them, so tension is always preserved.
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