Granite lobster is a level 74 Summoning familiar, it is summoned using a granite lobster pouch and will last 47 minutes. The granite lobster can be used for the following things: Combat: It has a combat level of 88 and provides Defence experience when it deals damage. In addition, its scroll, Crushing Claw, may inflict up to 964 life points' damage and temporarily decrease an opponent's Defence by five levels.