Table repair tool two claw cover openerMaterial: Metal【 Weight 】 The large size is about 51g, the small size is about 49g, without packaging.【 Length 】 A large watch back cover with a length of 146mm and a diameter of up to 6 grooves within 50mm can be opened. A watch back cover with a small size of 126mm in length and a diameter of up to 40mm, with 6 grooves (adjustable distance).Rotate counterclockwise until the back cover is rotated and removed.*It is recommended to measure the diameter of the back cover dial before purchasing to avoid making the tool unusable due to measurement errors.