THREAD TOOLKIT for BC37x24 threaded middle shafts Compatibility and purpose: Specifically designed for BC37x24 threaded middle shafts, this toolkit is intended to threads on steel and aluminum alloy frames and to tackle installation obstructions with ease. Effective chip removal system: Features 8 deep chip removal slots to efficiently handle short chips during use, promoting smoother operation and reducing friction throughout the process. Drive side design for ease of use: Drive side functionality allows clockwise removal while inspecting teeth counterclockwise, simplifying the threading process and reducing guesswork during maintenance. Detailed inspection process for nondrive side: For nondrive side operations, inspect teeth in a clockwise manner before removing counterclockwise to ensure thorough checks on your bike's components. Use scenarios Scenario 1: During bike installation on a steel frame, you encounter an obstruction in the BC37x24 threaded middle shaft. Use the toolkit to remove chips and clear the obstruction, restoring smooth threading. Scenario 2: Maintaining an aluminum alloy frame with a worn or damaged middle shaft thread. Apply the toolkit to the threads and facilitate proper engagement with the middle shaft. Scenario 3: Regular maintenance involving drive side and nondrive side inspections. Use the toolkit to inspect teeth clockwise on nondrive side and clockwise removal on the drive side to verify thread integrity before installation or removal.