This is a horizontal versus vertical spanner wrench giving you more leverage to work on those tight lens rings. Double sided pair of tips included: slotted and pointed with a range from 12mm to 60mm. If you remove the tread screw it opens to 15 cm.
Slotted tips are 1mm ( thickness ) by 5mm ( width ). Total length is 14 cm, total width is 7 cm. Made from metal. Made in Japan.