metal construction: Built from robust metal materials for long lasting durability and resistance to wear and tear. This lawn mower spindle assembly delivers reliable performance season after season, maintaining integrity even under demanding mowing conditions. Complete replacement kit: Includes all bolts for hassle installation, eliminating the need to source additional hardware separately. Everything you need for a complete spindle replacement in one convenient package. Wide compatibility range: Specifically engineered for models 61804137, 61804137A, 6180625, 6180625A, 6180625B, 6180660A, 6180900B, 91804137, 91804137A, 9180625B, 9180660, 9180660A, and 9180660B, replacing part numbers 6180660B, 9180660, 9180660B, and 6180660A with fit. Enhanced cutting performance: Optimizes blade rotation and cutting efficiency for clean, precise cuts every time, helping maintain a well groomed lawn appearance while reducing strain on your mower's engine and drive system. Use scenarios Home lawn maintenance: worn spindle during routine maintenance to restore even cutting height and reduce blade wobble on compatible mowers. Seasonal service for multiple mowers: Service a fleet of residential or small commercial mowers with one replacement kit, saving time and ensuring consistent performance across models listed. DIY or restoration: Easy installation with included bolts, enabling quick in a home workshop or service to maintain reliable mowing performance.