C-Borg & Reprap Replacement Parts & Upgrades. HotEnds. 3D Printing Electronics. 20 Tooth timing pulley, (MXL) .080 pitch, Gold Anod. Alum.-20MP025-6CA3. Reprap. Stock Drive Products/Sterling Instrument - E Product Manager. MISUMI, the catalog company of Machine Components eCatalog. TechPaladin Printing. Store « TechPaladin Printing#ecwid:category=1941327&mode=product&product=8398507.