This is a big shiny circular sawblade with a handle mounted on it so it can be used as a shield. It's a shield; therefore, it protects you. It protects you; therefore, it's a shield.
(In-game plural: sawblade shields)
Fittingly, the description contains an example of circular reasoning.
|rusty chain necklace | sawblade shield | wrench bracelet|
|TOP 10 sawblade shield collections|
6. iaruk - 107 | 7. Lokiator - 105 | 8. Sean Clannery - 102 | 9. AlbinoRhino - 100 | 10. Curbludgeon - 97
Collection data courtesy of ePeterso2 and Jicken Wings