Brand new and excessive qualityMaterial: POMSize: as shownColor: black, transparentType: Big Model, Small Model, V ModelQuantity: 1Pc/5PcsScope of application: three-D printers, engraving machines Features:- Compact, smooth to carry, and wide applicability.- Made of superb materials with reliable quality, it'll make sure the balance of the kit and upgrade the carrier life of the printing equipment.- The high-precision manufacturing task guarantees the steadiness and printing accuracy of the equipment, enabling high-precision printing of the model.Notice:1. The genuine color of the object may be slightly varied from the images shown at the online page brought on by many factors comparable to brightness of your monitor and lightweight brightness.2. Please enable slight handbook size deviation for the data. Thank on your understanding.3. 1cm=0.39''.Package Included: 1x/5x Bearing Pulley