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. QLou - 126 | 7. gulaschkanone - 118 | 8. AlbinoRhino - 118 | 9. iaruk - 117 | 10. Sean Clannery - 115
Collection data courtesy of ePeterso2 and Jicken Wings