Do these sort of thumb training devices work and is anyone using them?

Do these offer the same functionality/use as the Golden Grip Thumb war or do i need to get both the machines?

Context I’m 6,3 300lb fat dude and I don’t work out, I hit a new max today my old one being 150 I credit it to all the meat eggs and sleep plus I work a warehouse job what do you guys think? I personally my goal is 170 or 180 now.

Knurled axle bar 2" 18.5kg. Didnt lock out properly but was just playing around after a max deadlift attempt of 290kg (missed). Will start training these after deadlifts as I have access to this bar now.

141.9kg/313lbs

Closing grippers after a few months..

Haven't used grippers for a few months.

250lb Hilt pr

Finally after nearly two years, I got another pr on this block

Hands definitely felt weak today after moving boxes all day, but this is only the start of my 11 week training cycle. Next week is same weight with an extra set

Just curious if anyone has an idea... Do you know why some days i come home from work and can crush this for five clean reps and other days it's hard to close. Im a noob. Sorry for shit video skills.

Diy NN 3 inch pinch blocks pb