Features: brand new and high quality 3 Different length arms : 68mm, 88mm, 108mm, you can combine freely to get a perfect height or angle for your shooting. CNC aluminum alloy, light weight, and anti-oxidation treatment on the outer layer, it is more durable and no-faded. Comes with long & short same direction straight joints mount screws. Easy for installation and disassemble. Applicable for 9 8 7 6 5 4 etc series/XiaoYi/Sjcam action cameras. Specifications: Material: Aluminum Alloy Extension Arm Size: Approx. 68 mm/2.67", 88 mm/3.46", 108 mm/4.25" Three-in-one Extension Arm Weight: 51 Grams Total Weight of the Set: 110 Grams Applicable for 9 8 7 6 5 4 3 Series/XiaoYi/SJCAM Action Cameras Color: Black Package Includes: 3 Pieces Extension Arms 2 Pieces Long Screw 2 Pieces Short Screw note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!