Zombie head
Woodcutting ring was removed from RuneScape after 8 October 2013, but still exists in-game for those who had obtained it.
[FAQ] • [doc]
Woodcutting ring detail

The woodcutting ring is made by right-clicking the uncharged ring and selecting "Charge" within the Woodcutting skill plot area of the clan citadel. The ring requires a Woodcutting level of 40 to be charged in the Woodcutting plot. It gives an additional 50% Woodcutting experience to any you earn until you have gained a certain amount of experience, determined by your level and the tier of the woodcutting plot, after which it crumbles to dust. A new uncharged ring can only be obtained after this one has been used up. If you die and the ring isn't protected it will not appear at your gravestone and you will need to get a new one at the beginning of the next build cycle.

The player does not need to have the ring equipped to function. Simply having it in inventory increases experience and decreases the ring's charge.

Tier Exp per Level Exp at Level 99
Tier 1 About 192 exp per level 19,086 Exp
Tier 2 About 206 exp per level Untested
Tier 3 About 233 exp per level Untested
Tier 4 About 233 exp per level Untested
Tier 5 About 247 exp per level 24,540 Exp
Tier 6 About 261 exp per level 25,903 Exp
Tier 7 About 275 exp per level 27,259 Exp
Combat Stats
NoneRing slotDefenceArmour0
ConstitutionLife points0
Damage--Damage reduction
Accuracy--PvM: 0%PvP: 0%
Style-Style bonuses

Its experience gain does not stack with a Sacred Clay Hatchet or with woodcutting brawling gloves. However, it will work with the sawmill training activity, including the bonus for finishing a work order. This bonus stacks with the Sköll boots