00:11so over there's a sensor so you need to make sure that sensor doesn't touch the
00:15desk we'll take out the sensor okay so let's let's check so did these are
00:25pretty gone obviously we are changing and then I'll show you the new ones how big
00:32difference it is so there's a difference as you can see it's a big big difference
00:38the top one almost gone and then this is the new one and make sure you put the
00:45expensive and pretty good quality ones
00:55you
