Hole Saws, Hollow Drill Bit Set (3 Hole Saws Ø 30/40/50mm,1 SDS Adapter 350mm, 1 Center Drill), Drilling Holes in Brick, Concrete, Walls

Application Suitable for Adobe wall, Mixed brick wall, Cement wall, Foam wall, Red brick wall.(NOT for steel, tile, and stone) Notice: if there is a tile on one side of the wall, first use a tile hole opener to make a hole in the tile, then use a wall hole punch to punch holes. Steps 1.Ready to install; 2.Put the center drill into the post of Connecting Rod; 3.Put in the fixing screw and tighten; 4.Put the hole opener into the post; 5.Tighten the hole opener to the post; 6.You're done. Package includes 3 x Wall Hole Saws 1 x Connecting Rod 1 x Center Drill Bit 1 x Fastening Screw

• 【Kit Size】Hole saws: Ø30mm Ø40mm Ø50mm; Connecting Rod length: 350mm. suited for rotary hammer drill SDS-plus shank.
• 【Hole Saw Cutter】The wall drill bit is made of carbide tipped metal material,stable and durable,fast perforated in a long life.
• 【High quality】High-frequency welding technology, welding openings is very strong with smooth welding mouth inside and outside .
• 【Main function】Opening hole operation of wall and brick structure, such as adobe wall,mixed brick wall,cement wall,foam wall,red brick wall. Note: Do not use in steel, tile, and stone.
• 【Great for】Widely used for installing the air conditioner, oil fume exhauster and sewer pipeline hole open,ect.