This is 166017 Upgrade Parts Blue Aluminum Servo Linkage for HSP RC 1:10 Car.

Description:
Suit for HSP RC cars
Materials: Aluminum Alloy
1 set: 2Pcs
Package Size: 7.5 * 2 * 0.8cm / 3 * 0.8 * 0.3in
Package Weight: 21g / 0.7oz
Adhesive Taps

Package List:
1 * 166017 Aluminum servo linkage