Tool can not be soon by other players?

Hello, I am working on a game with a friend and he made this script and only your client can see the tool, I am not sure how to fix it and I have asked him a lot to fix it and he wont so I am trying to figure it out myself. The script works 100%, but the tool cannot be seen by other players. Do you have to give the tool to the player on the server? Here's the script:

local Pizzas = {}
local Buttons = {}
local Equipped = nil
game.StarterGui:SetCoreGuiEnabled(Enum.CoreGuiType.Backpack,false)

local Player = game.Players.LocalPlayer
local Character = Player.Character

local function search(location)
    for i,v in pairs(location:GetChildren()) do
        if v:IsA("Tool") then
            table.insert(Pizzas,v)
        end
    end
end

function update()
    for i,v in pairs(Buttons) do
        v:Destroy()
    end
    for i,v in pairs(Pizzas) do
        local Sample = script.Sample:Clone()
        Sample.Name = v.Name
        Sample.Image = v.TextureId
        Sample.Parent = script.Parent.MainFrame.Handler
        table.insert(Buttons,Sample)
        if Equipped ~= nil and Equipped == v then
            Sample.Equipped.Visible = true
        end
        Sample.MouseButton1Click:connect(function()
            if Equipped == nil or Equipped ~= v then
                Equipped = v
                Character.Humanoid:UnequipTools()
                Character.Humanoid:EquipTool(v)
            else
                Equipped = nil
                Character.Humanoid:UnequipTools()
            end
        end)
    end
end 

function refresh()
    Pizzas = {}
    search(Character)
    search(Player.Backpack)
    update()
end

refresh()

Player.Backpack.ChildAdded:connect(refresh)
Player.Backpack.ChildRemoved:connect(refresh)

Character.ChildAdded:connect(refresh)
Character.ChildRemoved:connect(refresh)

Let me know what is wrong here!