@Override
			public void run() {
	            for (Player p : Bukkit.getOnlinePlayers()) {

	            	ItemStack h = p.getInventory().getHelmet();
	            	ItemStack c = p.getInventory().getChestplate();
	            	ItemStack l = p.getInventory().getLeggings();
	            	ItemStack b = p.getInventory().getBoots();

	            	ItemStack mh = new ItemStack(Material.GOLD_HELMET);
	            	ItemMeta mhm = mh.getItemMeta();
	            	mhm.setDisplayName(ChatColor.GOLD + "Mining Helmet");
	            	ArrayList<String> lo = new ArrayList<String>();
	            	lo.add(ChatColor.GRAY + "Provides night vision.");
	            	mhm.setLore(lo);
	            	mh.setItemMeta(mhm);


	                if (h != null && h.equals(mh)){
	                	p.addPotionEffect(new PotionEffect(PotionEffectType.FAST_DIGGING, 40, 0), true);
		                p.addPotionEffect(new PotionEffect(PotionEffectType.NIGHT_VISION, 120, 0), true);
	                }


	                if ((h != null && h.getType() == Material.IRON_HELMET) &&
	                	(c != null && c.getType() == Material.IRON_CHESTPLATE) &&
	                	(l != null && l.getType() == Material.IRON_LEGGINGS) &&
	                	(b != null && b.getType() == Material.IRON_BOOTS)) {

	                	p.addPotionEffect(new PotionEffect(PotionEffectType.SLOW, 40, 0), true);

	                }
	            }

			}

	      }, 0L, 20L);