custom post type in wordpress

function my_custom_post_product() {
  $labels = array(
    'name'               => _x( 'Products', 'post type general name' ),
    'singular_name'      => _x( 'Product', 'post type singular name' ),
    'add_new'            => _x( 'Add New', 'book' ),
    'add_new_item'       => __( 'Add New Product' ),
    'edit_item'          => __( 'Edit Product' ),
    'new_item'           => __( 'New Product' ),
    'all_items'          => __( 'All Products' ),
    'view_item'          => __( 'View Product' ),
    'search_items'       => __( 'Search Products' ),
    'not_found'          => __( 'No products found' ),
    'not_found_in_trash' => __( 'No products found in the Trash' ), 
    'parent_item_colon'  => '',
    'menu_name'          => 'Products'