/scoreboard objectives add (name) dummy

/scoreboard players set @a (scoreboard name) 2 {SelectedItem:{id:"minecraft:THE_TOOL"}}

/scoreboard players set @a (scoreboard name) 1 {SelectedItem:{id:"minecraft:TOOL_NAME",tag:{display:{Name:"THE NAME YOU WANT THE TOOL TO BE CALLED"}}}}

/replaceitem entity @a[score_SCOREBOARD_NAME_min=2] slot.weapon.mainhand minecraft:TOOL_NAME 1 0 {HideFlags:8,display:{Name:"THE NAME THAT YOU CALLED YOUR TOOL"},CanDestroy:["sand","grass","gravel","dirt","mycelium","clay","farmland","grass_path","soul_sand","snow","snow_layer","FakeBlock"]}