4pc Groove pulley Ball Bearing. 007 White POM High Carbon Steel HU-0832.5-10 8mm 33mm 10mm 5mm 3.8mm. 006 White POM High Carbon Steel HU-0629-8.5 6mm 29mm 8.5mm 5mm 2.5mm. 005 White POM High Carbon Stee l HU-0626.5-9 6mm 26.5mm 9mm 6mm 3mm.
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