Features: Ensures optimally engine performances and longevity with our high efficiency friction wheel, designed to reduce friction loss and enhances the reliability. Crafted from durability metal, this friction wheel features lasers engraved miniature textures for noise reduction and self adjusting tension for seamless operation. Ideal for automotive technicians, DIY enthusiasts, needing a reliable replacement for aging original parts, ensuring smooth engine function. Perfect for routine maintenance or pre/post long distance drives, this friction wheel guarantees stable power transmission to essential component like the alternator and air conditioning compressor. This component is indispensable part of any engine repair toolkit, offering peacing of mind on every journey. Specifications: Component:Metal Size:Approx.28x13x8cm/11.02x5.11x3.14inch Part Number:120456 Package Includes: 1pcs Engine Belt Tensioner Pulley note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.