All Aluminum Alloy Curved Extension Arm Kit: 3 x aluminum alloy extension arms of different lengths ( 7.9”/5.3”/3" ) + 3 x aluminum alloy screws + 1 x aluminum alloy wrench (fix the screws at the connection) 1/4" Hole: Standard 1/4" screw holes, can be installed as expansion accessories according to your needs Hollow Design: This GoPro helmet mount is possibly to greatly reduce wind resistance during riding and improve the stability of shooting. The end connection of the extension pole bracket with a three-layer design ensures a stable connection High Quality & Lightweight: The GoPro extension arms are made of high-quality aluminum alloy, rustproof, rugged and durable, lightweight and stable Multi-Purpose: The extension arm mount kit can be assembled into an extension pole, selfie stick, stabilizer, etc. Widely used in outdoor sports such as skiing, skateboarding, cycling, motorcycle, parachuting, etc Product Details Manufacturer HSUTECH Model HGP155B Color Black Size 5" x 7" x 3" Quantity 7 EAN 0790903540979 Weight 150 g