GameObject.collider

var collider : Collider

Description

The Collider attached to this GameObject (Read Only). (null if there is none attached)

JavaScript
var other : GameObject; 
other.collider.material.dynamicFriction = 1;

using UnityEngine;
using System.Collections;

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

import UnityEngine
import System.Collections

class example(MonoBehaviour):

public other as GameObject

def Example():
other.collider.material.dynamicFriction = 1