Not sure I care too much about brand but 1 1/8"(29mm) is for 1/2" bulkhead, 1 1/2"(39mm) is for 3/4" bulkhead and 1 3/4" (45mm) is for the 1" bulkhead.
Lot of videos on YouTube on how and how not to, the first time I did it, it went way too smooth so now I tell myself I'm a pro.
The ones sold By BRS seem fine to me. I am sure there are better ones that last longer, but for drilling a hole every now and again, they have been good for me.
JBDreefs;1057486 wrote: The ones sold By BRS seem fine to me. I am sure there are better ones that last longer, but for drilling a hole every now and again, they have been good for me.
The set of 3 hole saws & guide BRS has worked great for us!
JBDreefs;1057486 wrote: The ones sold By BRS seem fine to me. I am sure there are better ones that last longer, but for drilling a hole every now and again, they have been good for me.