This is upgrade parts 122049 Aluminum Nylon Nut M4 for RC cars.

Description:
Suit for HSP cars.
Materials: Aluminum Alloy.
1 Set: 4Pcs
Package Size: 2.5 * 2.5 * 1cm / 1 * 1 * 0.4in
Package Weight: 4g / 0.1oz
Adhesive Tap Package

Package List:
1 * 122049 Nylon Nut M4