Abstract: Provided is an abrasive apparatus with a drive shaft terminating with a working head, where this working head is removably attach to an abrasive attachment. Also provided is a drive system arranged to rotate the drive shaft, the drive system being connected to the drive shaft distal from the working head. The abrasive apparatus also includes at least one fluid supply conduit having an inlet and at least one outlet, with the at least one outlet being located adjacent to the working head of the drive shaft and arranged to deliver fluid to the abrasive attachment and/or an immediate working area.

Abstract: Provided is an abrasive apparatus with a drive shaft terminating with a working head, where this working head is removably attach to an abrasive attachment. Also provided is a drive system arranged to rotate the drive shaft, the drive system being connected to the drive shaft distal from the working head. The abrasive apparatus also includes at least one fluid supply conduit having an inlet and at least one outlet, with the at least one outlet being located adjacent to the working head of the drive shaft and arranged to deliver fluid to the abrasive attachment and/or an immediate working area.

Abstract: A system and method of testing a computer network recording header information of data packets in a live traffic pattern on the computer network which identifies source and destination addresses for testing of the computer network; modifies the recorded header information by replacing the source and destination addresses of the recorded header information with the source and destination addresses for testing, and re-calculates the checksum for each data packet based upon the source and destination addresses for testing; and transmits a test traffic pattern with the modified header information on the computer network without establishing a live connection with the destination address.