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Rock-shell splinters are dropped by Giant Rock Crabs and King Sand Crabs. These are used to make rock-shell legs by giving the Skulgrimen 2 dagannoth hides, 7,500 coins, and 1 rock-shell splinter.

Giant rock crabs are found in the Waterbirth Island Dungeon, while King Sand Crabs are located within the south-eastern section of the Catacombs of Kourend. Players may find King Sand Crabs more favourable to kill for rock-shell parts, due to the lower melee defence; it should be noted, however, that Giant Rock Crabs have a -10 Magic defence bonus, which makes magic more effective on them.

Dropping monsters

Monster Combat level Quantity Rarity
King Sand Crab 107 1 3; Uncommon (1/64)
Giant Rock Crab 137 1 3; Uncommon (1/64)
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