Phone Counter Weight Stainless Steel Phone Balancing Counterweight with M3 Screws for M 4/OSMO Mobile3 Specification: Condition: 100% Brand New Item Type: Counter Weight Color: Silver Material: Aluminium Alloy20g/0.7oz Weight Size: Approx. 22x13mm/0.9x0.5in 10g/0.35oz Weight Size: Approx. 14x12mm/0.6x0.47inScrew: M3Application: Fit for OM 4/OSMO mobile3; Package List: 2 x 20g/0.7oz Weight 1 x 10g/0.35oz Weight ;