【TWO TYPES OF TRACTION DEVICES ARE OPTIONAL】Type A is suitable for non-folding wheelchairs and Type B is suitable for folding wheelchairs. Ordinary wheelchairs and recreational wheelchairs use Type B connected in the middle, and sports wheelchairs use Type A connected on both sides. Please purchase the right style according to your needs. 【WHEEL POWER HEAD】The Wheel Chair Tractor Pull Device Portableturns your attachable wheelchair into a high-performance machine that can increase your mobility. The wheelchair conversion kits can provide 3 forward speeds (up to 35km/h) and 1 reverse speed of 10km/h. 【EASY TO DISASSEMBLE】When you don't need to use electric Wheelchair Conversion Kit or when the battery is empty, it is easy to disconnect the trailer from the wheelchair within a few minutes and maintain the functions of a manual wheelchair. The trailer allows the connection between the manual wheelchair and the electric wheelchair 【WELL-EQUIPPED】The electric handcycle wheelchair Attachment entire series is equipped with shock absorbers to reduce your shocks while driving; the battery adopts imported electric core materials, the battery performance is stronger and the service life is longer; with LCD display, LED headlight, double disc brake, half-turn throttle and anti-explosion wheels. 【IMPORTANT NOTE】You will receive 2 packages, I will email you via Amazon and tell you 2 tracking numbers (They arrive at different times). In addition, the throttle grip is on the right side by default, if you need to change to the left side, please tell me your requirements after payment