Made in the USA, the Milwaukee® 3-7/8" Hole Dozer™;;; Hole Saw with Rip Guard™;;;comes with a Limited Lifetime Tooth Break Warranty. Each tooth is built with more steel behind the cutting edge for added strength. The Rip Guard™;;; warranty on tooth breaks is a first for the hole saw industry. The tooth strength along with 8% cobalt give added life to the teeth, allowing for increased tool life, as well as continued hole quality. The Hole Dozer™;;; includes Plug Jack™;;;, an all access slot design that allows for full access during plug removal. The Plug Jack™;;; gives access lower into the cup for thick material and higher towards the teeth for thin material.