GRS | TORNILLO DE BOLA MAGNABLOCK ✪NUEVO✪ 03-021 RARO GRABADO JOYERÍA ARTE GLENDO EE. UU.

GRS | MAGNABLOCK(#03-021). GRS MagnaBlock #03-021(Original MPN). A massive ball-and-roller bearing system allows smooth rotation without wear or looseness. The internal rotational brake system allows the user to easily adjust rotational resistance.

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