Beval Gear made from 45# steel provides reliable strength and machinability for small to mid sized power transmissions. The surface finish may show rust on some hardened gears. Package contents 1 pc Beval Gear 2M15T 1 pc Beval Gear 2M30T Note The inner diameter and fixing method need to be processed by yourself. Key benefits and specifications Two common bevel gear sizes included in one package to cover multiple transmission needs. Material: 45# steel offers durability and ease of machining. Function: bevel gears for 90 degree shaft alignment in small drive assemblies. Performance: suitable for gearboxes and power transmission projects that require 2M15T or 2M30T gears. Finish caveat: surface rust may be present on some units; plan to clean or finish as part of your post processing. How to use and compatibility Use in small transmission or gearbox assemblies where a 90 degree gear train is required and 2M15T or 2M30T gears are compatible. Inner diameter and fixing method must be prepared by the user to match your mounting shaft and housing. Suitable for hobby projects, robotics prototypes, and model engineering where these gear sizes are appropriate. Practical use scenarios Replacing worn bevel gears in a compact gear reducer for a hobby robot or small automated device, using the 2M15T and 2M30T options. Prototyping a 90degree drive train in a DIY CNC or mechanical model, with post machining of the bore and mounting holes. Refurbishing or repairing a transmission system that requires 2M15T and 2M30T bevel gears, after machining the inner bore and fixing features to fit the existing setup.