For 3 up to a glass thickness of 6 mm (.12" - .24").
Width: 40 mm (1.57")
Length: 81 mm (3.19"). 
Inside part: 20 mm (.79")
Outer part: 17 mm (.67")
Plastic blades are firmly installed and not interchangeable.

Care Magnet pico — significantly more compact than conventional small algae magnets.

Tunze care magnet pico

£9.99Price