High-quality Materials: The spokes of the wheels are made of high-quality 45 gauge steel and the rims are made of aluminum-magnesium alloy. These strong, impact and corrosion resistant materials provide excellent durability for this wheel.   Brushless Motor: Our kit uses an upgraded brushless motor that runs smoother and is less noisy, thus providing consistent power to the bike. And brushless motors do not require brush replacement, making maintenance easier.   Easy to Install: The kit includes detailed instructions. Simply follow the instructions and you can easily complete the installation of your bike, which saves you energy.   Efficient and Energy-saving: The kit's greater than or equal to 82% motor efficiency and 750 watts of power can provide you with great power while saving electricity.   Labor-saving: The 35 Nm torque of the motor and the 1:1 boost sensor help you save more labor when climbing, so you can ride effortlessly.   Excellent Load Capacity: With high-quality 45 gauge steel and aluminum-magnesium alloy, the kit has a maximum load capacity of 264.55lbs, so the average adult can use it without worry.   High Speed: The motor's 21.74MPH (35km/h) unladen speed gives you plenty of power and a high travel speed for a windy ride.   Superb Craftsmanship: The rim is made with a superb oxidation process, which greatly enhances corrosion, rust, and wear resistance while providing a shiny, smooth, and stylish appearance. Details Non-slip Handles: The handles have an uneven, non-slip design that increases friction against the palm of your hand, which improves driving safety.   Controller Storage Bag: The storage bag with cable holes makes it easy to store the controller. The fixing straps on the bag allow you to easily attach it to the bike. Thumb Speed Regulating Handle: The small and precise thumb speed regulating handle allows you to easily adjust the speed by pressing it, which is very convenient and accurate. Extension Cable: The extension cable for the motor (110cm/43.3" long) facilitates mounting and power supply without length restrictions.   Application This bike conversion kit is suitable for bike conversions. It is suitable for bicycles with a wheel diameter of 20 inches.   Specification Rim Material: Aluminum Magnesium Alloy Spoke: 45 Gauge Steel Main Materials of Motor: Copper, Iron, Magnetic Steel Process: Oxidation Color: Silver Suspension Type: Front Special Feature: High Speed, Easy Installing Voltage: 36V Rated Power: 750W  Rated Torque: 35N.M Boost Sensor System: 1:1 Motor Diameter: 154mm/6.06in Motor Shaft Diameter: M14 Motor Shaft Length: 170mm/6.69in Motor Cable Length: 110cm/4.33in Flat Fork Opening: 100mm/3.93in Suitable Wheel Diameter: 50.8cm/20in Rated Speed: 400RPM Motor Type: Brushless and Toothless Motor Efficiency: ≥ 82% No-load Speed: About 35km/h/21.74MPH Brake: Six Hole Disc Brake Can be Installed   Maximum Load-bearing Capacity: 120kg/264.55lbs Gross Weight: 10.5kg/23.14lbs Net Weight: 9.5kg/20.94lbs Package Size: 50*50*23cm/19.68*19.68*9.05in Axial Length: 17cm/6.69in Rim Diameter: 42cm/16.54in Thickness: 3.2cm/1.26in Front Dropout Spacing: 10cm/3.94in   Package Included 1 * Front Drive Motor Wheel 1 * Controller 1* Thumb Speed Regulating Handle 1 Set * Brake Handles 1 * Controller Bag 1 * Boost Sensor 1 * English User Manual All Accessories Needed for Installation   Notes 1.This set does not include tires and needs to be purchased by the customer. The suitable tire size is 20*1.75-2.125inch. 2.It is suitable for 2-wheeled bikes not for 3 or multi-wheeled bikes. 3.This product does not include a battery and tire. Please make sure to use lead-acid or lithium batteries of the corresponding voltage. 4.Speed varies depending on road conditions, battery conditions, load, wind speed, etc. 5.The kit is not waterproof, so take care to protect the interface when riding in the rain. Riding in the rain all the time is not recommended.