Follow these guides to fit your FIFINE CS1 microphone boom arm to your desk:
Check your mic
FIFINE AM8T, K688CT, T669, and A6T microphones are equipped with FIFINE CS1.
Check your desk
Your desk edge should be longer than 1.7 inches(40 mm), and the width of the desk edge should be less than 2.1 inches (55 mm).
You can use a band card, 3.3 inches(85.6 mm) in length and 2.1 inches(55 mm) in width, to check your desk edge. If the width of your desk edge is less than the width of the Bank Card, the CS1 boom can fit with your desk. If the width of your desk edge is longer than the width of the Bank Card, the CS1 boom can't fit with your desk.
Two common desks that CS1 doesn't fit
The desk edge is shorter than half the length of the bank card.
The desk surface is rounded or uneven. Or it can't afford the weight of the mic and boom.