The total length of the 7 key strips of the oi function keys is: 33.5cm, and the length of the key cover is 18.4cm*1.4cm
The 7-key film has two lengths: 200mm*20mm and 192mm*22mm, 210MM*21MM
Silicone 7-key membrane length: 200mm*20mm

The total length of the oi function key strips is 37.7cm, and the key cover length is 15.5cm*1.2cm
9-key membrane length: 163mm*20mm

The total length of the 12 key strips of the oi function keys is: 42cm, and the length of the key cover is 23.3cm*1.2cm
Length of 12-key membrane equipped with 12 keys: 240mm*20mm