There are four diagonal holes on the tungsten grinding light machine. 22.5 °, 20 °, 15 °, and 10 ° (the cutting angles are 45 °, 40 °, 30 °, and 20 ° respectively) 4 brass tungsten rails: 040inch, 1/16inch, 3/32 inch and 1/8inch. 4 Bronze can be swapped. With 5pcs double -sided diamond sand wheels and a connecting rod, it can be used for a long time. Uses: suitable for most 3/4-12 thread rotation tools. note: excluding explanation, strongly recommended professional installation Material: Metal colour: As Shown Package Contents: 1 x grinding knife 1 x connecting rod 5 x diamond sand wheel Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.