POWERBOR Step Drill Sets - Size Range: 7/16"~15/16"

Description

Enlarges and realigns exisitng holes. For general engineering, bridge and highway maintenance. Truck and trailor manufacturing. Construction. Shipbuilding and railroad. Offshore rigs and pipelines. Elevator repair. General metal fabrication. Includes: (1) Piece: 7/16"~9/16", 2 flutes, 1" step (1) Piece: 5/8"~3/4", 2 flutes, 1" step (1) Piece: 13/16"~15/16", 3 flutes, 1" step, requires 13/16" hole