Steam rune
Dropped on 3 slayer drop tables · wiki page
| Monster | Table | Qty | Rate | Chance per avg task | Assigned by |
|---|---|---|---|---|---|
| Whirlpool | Runes | 7 | 1/33.3 | 96.5% | Chaeldar 30–50 Konar 80–100 Nieve 100–120 Duradel 100–120 |
| Waterfiend | Runes and ammunition | 40–60 | 1/64 | 92.6% | Konar 120–170 Duradel 130–200 |
| Killerwatt | Runes and ammunition | 2 | 1/70 | 43.8% | Mazchna 30–50 |
Rates from the OSRS Wiki drop tables (Drop Rate Project). "Chance per avg task" uses the midpoint task size of the highest master that assigns the monster.