HOLE SW BI-MTL T3 4-1/8" *Brand Name: Lenox *Sub Brand: Speed Slot *Diameter: 4-1/8 in. *Material: Bi-Metal *Product Type: Hole Saw *Number in Package: 1 pk *Arbor Included: No *Compatible Arbors: 2L, 3L, 6L or 7L *Arbor Type: T3 *Height: 1-3/4 in. *Snap Back: 2L, 6L *Arbor Size: 66L *Pipe Entrance: 3-1/2 in.