POM optional 42mm planet gearbox

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{"cid":"106139","pid":"20947322","pimg_url":"\/\/img1.b2bforus.com\/9e\/c5\/c1081517356f\/product\/69601453_s-w400xh400.jpg","name":"Steel 42mm Diameter 1\/71.2 Ratio Steel Planetary Headbox","attrs":{"Price":"Negotiable","MOQ":"100 Pieces","Delivery Time":"Negotiable","Brand":"Twirl"}}