The S3M rubber open synchronous belt body is made of imported high quality synthetic neoprene rubber, and is equipped with a variety of rubber accessories for different purposes; The skeleton material is imported high quality glass fiber rope; The tooth surface is protected by nylon 66 high tensile cloth.
| specification | Pitch length | Number of teeth | specification | Pitch length | Number of teeth |
| STS3M-150 | 150.00 | 50 | STS3M-432 | 432.00 | 144 |
| STS3M-174 | 174.00 | 58 | STS3M-453 | 453.00 | 151 |
| STS3M-177 | 177.00 | 59 | STS3M-486 | 486.00 | 162 |
| STS3M-192 | 192.00 | 64 | STS3M-504 | 504.00 | 168 |
| STS3M-201 | 201.00 | 67 | STS3M-507 | 507.00 | 169 |
| STS3M-207 | 207.00 | 69 | STS3M-537 | 537.00 | 179 |
| STS3M-210 | 210.00 | 70 | STS3M-564 | 564.00 | 188 |
| STS3M-219 | 219.00 | 73 | STS3M-573 | 573.00 | 191 |
| STS3M-225 | 225.00 | 75 | STS3M-582 | 582.00 | 194 |
| STS3M-240 | 240.00 | 80 | STS3M-585 | 585.00 | 195 |
| STS3M-246 | 246.00 | 82 | STS3M-597 | 597.00 | 199 |
| STS3M-252 | 252.00 | 84 | STS3M-600 | 600.00 | 200 |
| STS3M-255 | 255.00 | 85 | STS3M-606 | 606.00 | 202 |
| STS3M-276 | 276.00 | 92 | STS3M-633 | 633.00 | 211 |
| STS3M-300 | 300.00 | 100 | STS3M-636 | 636.00 | 212 |
| STS3M-312 | 312.00 | 104 | STS3M-660 | 660.00 | 220 |
| STS3M-327 | 327.00 | 109 | STS3M-699 | 699.00 | 233 |
| STS3M-339 | 339.00 | 113 | STS3M-714 | 714.00 | 238 |
| STS3M-357 | 357.00 | 119 | STS3M-750 | 750.00 | 240 |
| STS3M-360 | 360.00 | 120 | STS3M-810 | 810.00 | 270 |
| STS3M-384 | 384.00 | 128 | STS3M-900 | 900.00 | 300 |
| STS3M-399 | 399.00 | 133 | STS3M-1050 | 1050.00 | 350 |
| STS3M-408 | 408.00 | 136 | STS3M-1188 | 1188.00 | 396 |
| STS3M-420 | 420.00 | 140 |
