Description: 170 Pieces premium rubber various standard size scuba diving O ring kit in a plastic box, lightweight, wear-resistant, durable and long lasting Commonly used for dive equipment, BCD's, regulators and hoses, great for your tank valve, hp and lp air hoses With a small pick for easy use Works well for underwater cameras, pressure gauges, dive lights or other diving gear Great repair replacement accessories for your worn dive o rings Specification: Material: Rubber Hardness Durometer: 90 Color: Black Quantity: 170 Pieces Size Chart: Size/Scuba Application/Quantity Size 003 1/16" High PressureHose/Swivel Seal 14 Pieces Size 010 1/4" Low Pressure Hose/2nd Stage Reg/Cylinder Valve Stem 15 Pieces Size 011 5/16" Low Pressure Port/Hose,Hose Adapters 15 Pieces Size 012 3/8" High Pressure Port/Hose,Gauge Hose 15 Pieces Size 013 7/16" Large Low Pressure Port/Hose,Piston Seat Seal 15 Pieces Size 014 1/2" Standard Yoke/Tank Regulator 15 Pieces Size 015 9/16" High Pressure Hose/Swivel Seal 15 Pieces Size 022 1" Regulator Piston Ring/Body Plug Seal 15 Pieces Size 111 7/16" Small DIN Regulator Valve 15 Pieces Size 112 1/2" Standard DIN Regulator Valve 15 Pieces Size 116 3/4" Small Tank Neck, 3500 Cylinders 10 Pieces Size 214 1" Large Tank Neck 10 Pieces Package Includes: 170 Pieces Scuba Diving O Ring Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!