The black mask is a unique mask worn in the head slot. The mask has the same stats as a black med helm. It provides a player 16.67%[1] Attack and Strength boost against all monsters on the player's current Slayer task. It requires 20 Strength, 10 Defence, and 40 Combat to equip.
Black mask - OSRS Wiki
Black mask, Old School RuneScape Wiki
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Black mask, RuneScape Wiki
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Jonas Mask - Osrs Wiki Sphere Png,Jason Voorhees Mask Png - free transparent png images