The standard black nylon screws of the PEAK Rotary Vise can be replaced using the brass screw upgrade kit. The 1/4-20 thumb screw used to set the tension on the rotary motion has a nylon tip so that the stainless steel rotary shaft is not scarred. The kit also includes a  8-32 thumb screws for the bobbin assembly. Please take a look at other peak accessoreis we carry.

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