Features: - Design Specification: based on IFMAR/ROAR Rule, IFMAR approved - Motor measurements (Diameter x Length) 35.8mm x 51mm - Shaft Diameter: 3.17mm - Magnet proportions (Diameter x Length): 12.5mm x 24mm(3.5turn~9.5turn), 12.3mm x 24mm(10.5turn~17.5turn) - adjustable Endbell with changing the peformance associated with engine on production power and torque - fat: ~170g - suggested RC Model automobile: 1:10, MINI vehicle