Hopkins PG03 Underwater PG03 Underwater Hydraulic Peanut Grinder Handle 330 030 Screw 1 330 035 Washer Size:7 8" x 23 1 2" (18" Drill Depth) 330 030 Screw 1 330 035 Washer 1 510 008 O ring 2 510 010 O ring 1 510 029 O ring 1 510 260 O ring 1 510 450 O ring 1 510 490 O ring 1 510 504 Neoprene Medium Neck Dam 1 510 550 Oral Nasal Valve 1 510 575 Nose Block Pad 1 510 625 Water Dump Shroud 1 510 683 Chin Cushion Bag The compressible bulb is a first time use scientific gas sampling bulb ensuring that it has not been made from reconstituted rubber that may contain hydrocarbons Fitting 6mm Collet The PG03 underwater grinder has been developed to be compact and light making it ideal for grinding welds and performing intricate maintenance tasks