GameObject.collider

Description

Прикрепленный Collider к данному GameObject'у (Read Only). (null, если компонент не прикреплен).

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    public GameObject other;
    void Example() {
        other.collider.material.dynamicFriction = 1;
    }
}