This is the rx280 7.2volt Ferrite Motor from Losi. Designed for use with the MINI Baja, SLDR, REQUIREMENTS: Simple hand tools for installation FEATURES: Bronze bushings Single-wind armature Solid can Fixed timing Factory-installed capacitors Factory-installed 2-pin female connector. Designed to plug into the ESC of SLDR, MB INCLUDES: One T-280 Ferrite motor with lead, 2-pin male connector and two capacitors preinstalled SPECIFICATIONS: diameter: 24mm (.94") Weight with connector: 40g COMMENTS: Motor does not have replaceable brushes, fan or coreless design. Does not include any instructions.