The sale is easy and forgiving. This is the original *Makita Core Bit* 💛 *Details in the picture:* **Item** **Details** **Brand** Makita - Makita Japan **Type** Core bit / Concrete core bit **Size** **105 x 150 mm** Meaning 4-1/8" × 5-7/8" **Model Number** No. 7980499 **Usage** Drilling circular holes in concrete, brick, stone Mostly for air conditioning, plumbing, and electricity The piece next to the yellow box is the same bit - it's a metal cup with carbide teeth.