ZTTO Bicycle Racing Saddle Mount Rail Seat Clamp Fit GoPro Hero 7/6/5/4 HERO CNC
1 Bicycle Saddle Rail Mount. Single saddle rail mount weighs only 30g, very lightweight but super strong. Size: 60 30mm. Made of CNC aluminum alloy, durable and sturdy. 2 Long Screw. Item Size: 63 45mm.