Through Reverse Circulation
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| Type | TOSI440 | TOSI450 | TOSI460 | TOSI480 | TOSI450 | TOSI460 | TOSI480 |
| Drilling Diameter (mm) | Φ90～105 | Φ110～130 | Φ135～155 | Φ160～200 | Φ200～254 | Φ254～311 | Φ311～360 |
| Hammer Length (mm) | 1143 | 1281 | 1292 | 1345 | 1578 | 1440 | 1430 |
| External Diameter (mm) | Φ85 | Φ105 | Φ124 | Φ154 | Φ190 | Φ250 | Φ270 |
| Centre hole diameter (mm) |
Φ33 | Φ36 | Φ36 | Φ61 | Φ61 | Φ75 | Φ85 |
| Working Pressure (MPa) | 0.7～2.1 | 0.7～2.1 | 0.8～2.1 | 0.8～2.1 | 0.8～2.1 | 0.8～2.4 | 0.8～2.4 |
| Air Consumption (m3/min) | 4.2～11.7 | 5.7～14.2 | 6.5～19.3 | 9～18 | 12～30.8 | 15～34 | 20～37.8 |
| Torque (N·m) | 475 | 600 | 791 | 950 | 1040 | 1260 | 1250 |
| Impact Frequency (Time/min) | ≥800 | ≥800 | 810～1200 | 600～1100 | 660～1208 | 600～1230 | 600～1150 |
| Connection Thread | Inner API 2-3/8" | Inner API 2-7/8" | Inner T 91-3 | Inner API 4-1/2" | Inner API 4-1/2" | Inner API 4-1/2" | Inner API 4-1/2" |
| Bit Shank | TOSIF335-95/100 | TOSIF345-115/127 | TOSIF355-140/152 | TOSIF365-165/178/195 | TOSIF385-203/216 /230/254 |
TOSIF3105-245/273/305 | TOSIF3125-311/355/381 |