4x DIY DC 3.7V Coreless High-speed Motor with 4 x 55MM Propeller

High quality, solid metal case

Material:Alloy
Color: as shown in pic
Descrption:
Hollow glass specification: 7x16 mm
Rated Voltage : 3.7v
Speed : 50000 RPM (the actual speed may be high or low)
Electricity flow: no-load: 0.08A
Locked rotor:1.8A
Rated voltage :4.2 v
Electricity flow : no-load 0.1A ,blocked :2A
Speed : 50000RPM
Output shaft :0.8mm
Output shaft lenght :7mm
Lead long :about 46mm

Wire color: red&blue wires,black&white wires will be random send.