CS Unitec Underwater SDS Max Hydraulic Rotary Hammer Drill 2 2418 0020 Barnacle Buster Steady Flow 1 520 024 Packing LSE DBH XXL Steady Flow 1 520 024 Packing 1 520 030 Washer 1 520 031 Washer 1 520 033 Teflon O Ring 1 525 330 One way Valve Kit 1 540 095 Washer 1 550 023 Seat Assembly 1 520 525 Knob 310 003 O ring 1 510 008 O ring 2 510 010 O ring 2 510 011 O ring 1 510 012 O ring 1 510 014 O ring 1 510 015 O ring 1 510 211 O ring 1 510 260 O ring 1 510 401 Gasket 1 510 481 O ring 1 510 483 O ring 1 510 490 O ring 1 510 550 Valve Maintenance free gearhead (permanent lubrication and sealed gears) SAE #8 port for hydraulic hose connection