【Fits For】:The 105-155mm Universal Drive Shaft fits for 1/10 SCX10 Red cat Gen7 /Pro RC 4WD D90 RC Crawler ,etc.Please check the manual of your specific model for compatibility before order though it is the universal drive shaft. 【High Reliability】: The drivehshaft is with more turning power and more sturdy use ,High reliability, ensuring smooth transmission.The rc car upgrades parts highly increase the strength and precision. 【Long-lasting Performance】:The long lasting and durable drive shaft provides unmatched driving versatility,it is a nice replacement accessories for the old or broken one. 【More Durable】:The upgrades part is durable enough,improves the overall performance of the rc car.Specially designed strengthening cut-outs for increased crash resistance. 【Easy to Assemble】: The drive shaft can be directly installed, do need any modification. It is designed to allow more smooth rotation and strength! Providing unmatched driving versatility. 【Easy to Assemble】: The drive shaft can be directly installed, do need any modification. It is designed to allow more smooth rotation and strength! Providing unmatched driving versatility.