works for serverside but not client?

--local script--
script.Parent.ChildAdded:Connect(function(tool)
	game.ReplicatedStorage.RemoteEvent:FireServer(tool)
end)

--server script--
game.ReplicatedStorage.RemoteEvent.OnServerEvent:Connect(function(player, tool)
	if tool.ClassName == "Tool" then
		tool:Destroy()
	end
end)

this script destroys the Tool when its added from the server side but if its added from the client side it gives me this error:

ServerScriptService.btololsscript:2: attempt to index local 'tool' (a nil value)
Stack Begin
Script 'ServerScriptService.btololsscript', Line 2
Stack End

You don't need a remote event and you need to put the LocalScript inside the Tool. There is the script:

local tool = script.Parent

if tool:IsA("Tool") then
        tool:Destroy()
end