The RSO repair clamp is in fact a small version of the RS-1 repair clamp, having a range of max. 4 mm. 
The clamp is used on pipes for which RS-1 clamps are not available due to the small pipe diameter.

Pressure ratings:
RSO clamps can resist a working pressure of 16 bars.

Available sizes:
RSO clamps are available in several different working ranges from 19-23 to 60-64.
Available lengths: 75, 100 and 150 mm.