Neewer Bike Aluminum Handlebar Bar Standard 31.8mm Mount for GoPro Hero Session/5 Hero 1 2 3 3+ 4 5 SJ4000 5000 6000 DBPOWER AKASO VicTsing APEMAN WiMiUS Rollei QUMOX Lightdow Campark And More Aluminum CNC made Aluminum alloy production Fit for GoPro Hero 5/5 Session/Hero Session HD Hero 4 3+ 3 2 1 SJ4000 SJ5000 SJ6000 SJ7000 Round: 3mm - 31.8mm Color: Black