Kirby Morgan 525 322 Helmet Spares Kit For KM 17C Latch Catch A minimum of 20 PSI Coating Removal A minimum of 20 PSI water pressure is required at the saw for cooling and lubrication of the bar and chain 5MM standard neoprene boot has a vulcanized sole and blind stitched seams that create a superior water seal Nose Block 1 510 631 Neck Dam Latex Small Medium 1 510 754 Head Cushion Assembly 1 510 683 Chin Cushion 1 510 747 Oral Nasal Mask 1 525 309 Regulator Rebuild Kit 1 525 311 Side Block Rebuild Kit 1 525 745 Head Cushion Foam Spacer Kit 1 525 759 Quad Valve Exhaust Kit 1 530 035 Screw 2 530 040 Screw 2 530 045 Screw 2 550 061 Spacer 2