| Brand | Model | Color | Width x Height | Thickness | Weight | Area density | Source | Created |
|---|---|---|---|---|---|---|---|---|
| LKT | Rapid Sound | red | 165 x 165 mm | 1.8mm | 48g | 0.176 g/cm² | Source | over 5 years ago |
| LKT | Rapid Sound | red | 165 x 165 mm | 1.8mm | 49g | 0.180 g/cm² | Source | over 5 years ago |
| LKT | Rapid Sound | red | 165 x 165 mm | 2.0mm | 49g | 0.180 g/cm² | Source | over 5 years ago |
| LKT | Rapid Sound | red | 165 x 165 mm | 2.2mm | 51g | 0.187 g/cm² | Source | over 5 years ago |
| LKT | Rapid Sound | black | 162 x 162 mm | 2.0mm | 54g | 0.206 g/cm² | Source | about 5 years ago |