This Allen wrench set is shipped with the OBS-5+ High Suspended Sediment Concentration Monitoring System, as part of the 21304 OBS-5+ Accessories Kit. The 21381 may be purchased to replace a lost Allen wrench set.
|Dimensions||17.02 x 9.14 x 1.58 cm (6.7 x 3.6 x 0.62 in.)|
|Weight||90.72 g (0.2 lb)|