Sleeve size question
 

Just wondering, for 3/4 od tubing should i get the 1/4" - 3/4" sleeve? might be a very tight fit, or should i get the 1/2" - 1 1/4"

Also for heatshrink, which size to get?

For fans its 1/4 sleeving? is it 1/8 for single cable sleeving. Which heatshrink to get for single cable?