Servo-horn for SG90

SG90 does not have cross horn as other servo motor.
But also SG90 mount has expected cross horn on their design,
So this parts has been created on this situation.
For this usage PLA is not matched for use because it may not have good strength and spring.
I had tried with Taulman T910 but result may not matched my setting.
Finally I had achieved good result with Chinese Nylon filament.
My friend who is working for children DIY support at AKIHABARA SHOP will use this parts as part of his set