The CCM stainless steel drilled Pump Arm is drilled for AT. The rod will vary in length depending on the application. Threads are 10-32 x 3/8 long and the rod diameter is 3/16. CCM products carry a LifeTime Workmanship Warranty. This warranty applies only to the original purchaser and is NON-TRANSFERABLE. This warranty does not apply to items that have been abused, misused, modified or repaired.