Description: 8 Pieces premium rubber various standard size scuba diving O ring kit, 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 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: 70 Color: Black Quantity: 8 Pieces Size Chart: Size/Scuba Application/Quantity Size 003 1/16" High Pressure Hose/Swivel Seal 2 Pieces Size 011 5/16" Low Pressure Port/Hose, Hose Adapters 2 Pieces Size 012 3/8" High Pressure Port/Hose, Gauge Hose 2 Pieces Size 112 1/2" Standard DIN Regulator Valve 2 Pieces Package Includes: 8 Pieces Scuba Diving O Ring(2 Pack) Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!