| Model | Opening Size/mm | Applicable Material |
| PHR-1 | 25*25 | Various general metal. Thin, small, long, or irregular parts.Standard parts, hardware, cutting tools. Test inner and outer surface hardness of steel pipes. |
| PHR-2 | 50*50 | Various general metal. Thin, small, long, or irregular parts.Standard parts, hardware, cutting tools. Test inner and outer surface hardness of steel pipes. |
| PHBR-2 | 50*50 | Thin plates, small parts.Products, semi-finished products after final heat treatment. Raw materials, workblank of castings and forgings. |
