【Electronic Parameter】: 660W max wattage and 600V the maximum voltage, this Fa8 tombstones fit for all kind of T8 T10 T12 single pin fluorescent tubes.【UL Standard】: These Single Pin T8 lamp holders are UL listed. They are made of high quality PBT material which is very durable and fireproof, and makes it the ideal for replacing old florescent lamp holders, 100% safe from fire hazzard, heat resistant.【Easy to Install】: These T8 Fa8 lampholder are very easy to be used for both dual end powered and single end power fluorescent tubes, connect with 18 gauge power wires, it is very easy to install a light in this socket.【Ideal for 8FT LED Bulbs 】: This non shunted single pin Fa8 led tombstone is widely used for 8ft single pin led bulbs. If you need high output 4ft led bulbs, please search "B074MC1FW3", "B074MCTBVN" or "B075D7N2V4".【Hassle-free Warranty】 - JESLED offers 24/7 after-sale support, 60 days full refund policy and 3 years hassel-free warranty. Please contact us directly if you meet any issue.