Beval Gear set made from 45# steel for durability and reliable performance. The surface may show rust on some hardened gears. Package contents 1 pc Beval Gear 2M18T 1 pc Beval Gear 2M54T Important note The inner diameter and fixed mounting method need to be processed by the user. Key benefits and features Material and strength: 45# steel construction provides solid strength for bevel gear applications. Standard module compatibility: 2M module gears designed to fit standard 2M gear setups. Gear pair for practical ratio: includes a 2M18T and a 2M54T gear, enabling a 3:1 gear ratio when used as a pair. mounting: both gears require user machining to achieve the correct bore and mounting fit for the application. Practical for DIY and : suitable for replacing or building bevel gear drives in small machines and projects. 23 use scenarios DIY rightangle drive: configure a compact 90degree drive in a small machine or robotics project, using the 2M18T and 2M54T gears as a paired set. Gear train replacement: worn bevel gears in a prototype or hobby machine where a 3:1 ratio is desired between shafts. Educational experiments: study bevel gear operation and ratio effects in a workshop setting by assembling the gear pair and machining the required bores. Consistency with original specifications Brand: Beval Gear Materials: 45# steel Gears included: 2M18T and 2M54T Note on finish and processing: acknowledges potential surface rust and the need for user machining of inner diameter and mounting method No added dimensions or changes to the stated models and functions It should be noted that this product description does not contain any content that induces aftersales refunds, contact information, or . The product is sold as described, and users are responsible for any processing and installation according to the provided instructions.