Does anyone have the sizes (external diam, internal diam) for our vacuum hoses?

Also, has anyone installed silicone hoses on their max? Would this decrease the dry, cracking hose problem?

(pics of silicone installed are encouraged)

 

some vaccum hoses are different in size....... i just bought some rubber windshield washer/vaccum line and it works great!!!!!

 

I understand they're different sizes... We should have 3 different sizes. I just can't pull them off the car to take in and compare when i get new ones because I need the car to go get the new ones and i really don't feel like doing the hose swap in the parking lot where I'm sure it will be windy and below freezing...

 

I replaced mine with some silicone rubber stuff I had for years in the garage. It was all 5/16" O.D. by 1/8" I.D.