Features: M12 thread interface 170 Degree Ulrta-Wide Angle Compatible: for GOPRO For HERO2 that uses a M12 (12mm inner diameter) lens holder perfect quality Compatible with: Compatible for HERO2 only. Specifications: Color: Black Material: plastic Size: Max. 20 (H) x 17 (Dia) mm Net Weight: 8.5g Package included: 1 x Replacement Camera Lens