Features: ✅GOOD MATERIAL:Made of high quality grade rubber material, great water and oil resistance, great heat resistant, good sealing. Durable and long service life. Great heat resistant performance: -40℃ (-40℉) to 120℃ ( 248℉). ✅PRODUCT FEATURE:Soft and flexible o rings, simply snap on, easy to install. With 1 set of high quality O-ring sealing hooks as a gift --- it can let you to remove o rings and various seals easily. The two ends of the aluminum alloy rod can install two hooks to meet your different needs. ✅POPULAR SIZES:18 Popular Sizes O-Ring Sealing Washer. You may not don't know what size you need. Fortunately, all the sizes of this O-ring kit are enough to allow you to cope with various family needs. Metric sizes from 6mm to 28mm O.D. ✅CONVENIENT STORAGE:279 pieces NBR rubber o rings are stored in a sturdy transparent plastic box with labels, saves you effort in tidying up and choosing sizes. And 279 pieces are enough that will keep you going for months or even years. You don't have to go to a hardware store. ✅WIDE APPLICATION:Nitrile rubber metric o rings prevent leaks in fuel or water plumbing, machinery, hydraulic, and pneumatic connection; provide secure seals for any oil, air, gas, and water seal application(faucet, sinks, filters). Used to electronic equipment, pipes, tap faucets, pumps, solenoids, gauges, sensors, trucks, cars, motorcycles, boats, engines, spray guns, pressure washers, and more. Specifications: Condition: Brand new and high quality Material: Rubber Color: Black Weight: 200g Package Included: 1 * Kit of 279pcs O-Rings Features ✅GOOD MATERIAL:Made of high quality grade rubber material, great water and oil resistance, great heat resistant, good sealing. Durable and long service life. Great heat resistant performance: -40℃ (-40℉) to 120℃ ( 248℉). ✅PRODUCT FEATURE:Soft and flexible o rings, simply snap on, easy to install. With 1 set of high quality O-ring sealing hooks as a gift --- it can let you to remove o rings and various seals easily. The two ends of the aluminum alloy rod can install two hooks to meet your different needs. ✅POPULAR SIZES:18 Popular Sizes O-Ring Sealing Washer. You may not don't know what size you need. Fortunately, all the sizes of this O-ring kit are enough to allow you to cope with various family needs. Metric sizes from 6mm to 28mm O.D. ✅CONVENIENT STORAGE:279 pieces NBR rubber o rings are stored in a sturdy transparent plastic box with labels, saves you effort in tidying up and choosing sizes. And 279 pieces are enough that will keep you going for months or even years. You don't have to go to a hardware store. ✅WIDE APPLICATION:Nitrile rubber metric o rings prevent leaks in fuel or water plumbing, machinery, hydraulic, and pneumatic connection; provide secure seals for any oil, air, gas, and water seal application(faucet, sinks, filters). Used to electronic equipment, pipes, tap faucets, pumps, solenoids, gauges, sensors, trucks, cars, motorcycles, boats, engines, spray guns, pressure washers, and more.