How to Identify Different Types of track lighting? if it has three contacts, it is likely an "H" type. if it has two contacts or the contact-tips are 1 inch apart, it is likely a "J" type, but if they are 7/8 inch apart, the track is likely an "L" type. A track lighting system is a great way to brighten any room, be it your kitchen or garage. These pendants blend perfectly into both modern and classic mood settings and offers a new dimension of possibilities for your interior design plans. BULB REQUIREMENTS: 1x 60W Max E26 Bulb (sold separately). EASY INSTALL: insert contacts into J series track and put it in and rotate it 90 degrees. MEASURE : 6.7" in diam,the pendant light to be 30.5" from the top of the connector to the bottom of the light shade .Custom made is provided :pls let me know if you need to custom a different length! If you need help or other special requests, please emails us via <>