This is the Brushless Motor Power Pack for the Multiplex Park Master, MPUA2231. FEATURES: Motor, speed control, propeller and adapter in one package, no need to search for individual components INCLUDES: Himax HC28160890 Outrunner Electric Motor with mount, hardware and pre-attached leads MULTIcont BL-17 Speed Control for Brushless Motors 11 x 5.5 APC Prop, Hub and Driver REQUIRES: Installing in airplane following instructions in manual SPECS: Motor- Weight: 79g (2.79oz) Max Power: 200W (dependent on several factors) KV: 890 Diameter: 28mm (1.1") Length: 33mm (1.3") Electronic Speed Control- Cell count: 5-12 NiCd/NiMH, 2-3 LiPo Continuous current: Max. 17A (22A Surge) Internal Resistance: 0.013 Ohm Pulse Frequency: Approximately 13kHz BEC voltage: 5V BEC current: Max. 1.5A Dimensions: 1.02" x 0.67" x 0.32" Weight: 0.31 oz (9g) with wires cnh 3/30/09 ir/jxs