Key Features Sturdy and Durable: The product is made of iron and copper and adopts an electroplated process, which gives the product high durability, good appearance, corrosion-resistance, rust-resistance, abrasion-resistance, and deformation-resistance.   Powerful& Efficient: The 250W brushed pure copper motor with a 3300rpm rated speed and 0.9N. M torque runs efficiently, which can provide enough power to easily handle various road conditions. Good Load Capacity: It adopts selected materials and has a reasonably strong structure with a load-bearing capacity of up to 264.55 lbs, so you can use it with assurance. Adjustable Speed: The product features a pair of non-slip and comfortable handles that allow you to easily increase or decrease the speed (infinitely adjustable), enhancing your cycling convenience. Safety Protection: The controller's 21V undervoltage protection and IP54 motor protection rating ensure safe use and give you peace of mind when working. Highly Flexible & Controllable: This product is equipped with a reliable controller that can quickly and accurately transmit signals, making operations more sensitive and controllable. Complete Kit: This product is a complete set consisting of a controller, motor, a pair of handles, a chain, a chain wheel, etc. Application It is great for cyclists, commuters, bicycle lovers, students, takeaway workers, etc.  Specification Material: Iron, Copper, Rubber Color: Black, Silver Process: Electroplated Style: Modern Assembly Required: Yes Display Type: LED (Power Residual) Motor Type: Brushed Pure Copper Motor Speed Adjustment: Infinitely Adjustable Load Capacity: 120kg/264.55 lbs Voltage: 24V Output Power: 250W Rated Speed: 3300rpm Rated Current: 14A Torque: 0.9N.M Protection Class: IP54 Chain Wheel Diameter: 13cm/5.12in Chain Wheel Inner Hole Diameter: 3.8cm/1.5in Motor Total Length: 14cm/5.51in Motor Body Size (D*L): 10*9cm/3.94*3.54in Package Size: 26.5*24*14cm/10.43*9.45*5.51in Gross Weight: 4kg/8.82 lbs Net Weight: 3.8kg/8.38 lbs Package Included 1* 250W 24V Brushed Motor 1* Chain 1* Motor Controller 1*Chain Wheel 1*Triangle Plate 2*Keys 1 Pair*Handles with LED Display Other Accessories for Installation Notes 1.This product does not include tires, batteries, or chargers. 2. It is suitable for two-wheeled bicycles, not for three-wheeled or multi-wheeled vehicles. 3.Please carefully confirm whether this product matches your bicycle before purchasing.