drill bit set

9PCS Concrete Hole Saw Set, Tungsten Steel SDS Plus Shank Masonry Wall Hole Opening Drill Bits for Brick, Concrete.
PACKAGE INCLUDED- 5 PCS Hole Opener：1-2/11”(30mm), 1-3/5”(40mm), 2-9/16 “(65mm), 3-5/32”(80mm), 3-15/16”(100mm); 2PCS SDS connecting rod: SDS 11-13/16”(300mm), SDS max 11-13/16”(300mm); 2 PCS center drill bit 4-1/3”(110mm).
HIGH MATERIAL- Our concrete hole saw set is made of tungsten steel and carbide, durable and works under rough conditions,but also super safe to use and simple.