1 review total. The 1" bit on the right failed to cut through one tile. The Purchase The first step is to avoid projects where you need a diamond hole saw. The Quick Answer. Harbor Freight Diamond Hole Saw (32400-7VGA) By Mark Sticht The 1/2" bit on the left is brand new. After these three adjustments it performs stellar and is still cheaper than high end models. I needed the 1 3/8” saw for my application, and a quick glance at the manual showed that you pull the knurled collar back to allow the saw to thread onto the arbor. If that isn't possible, at least avoid these hole saws. It comes with two arbors (one for the smaller diameter saws and a beefier one for the larger saws), 9 hole saws, and an Allen key for loosening/tightening the pilot arbor. Harbor Freight 16" Scroll Saw Part #93012; Brand: Harbor Freight | Category: Scroll Saws; ... Also, the cutter plate sits too deep and has way to large a hole so I replaced with a planed piece of hardware that sits level to the table. Cannot get anybody on the phone as they hang up once you get past the automated system and emails are either ignored or answered a week later with a standard copy/paste response. 67 reviews for Harbor Freight Tools, 2.2 stars: 'Ordered some storage containers on 4/26/20 and as of 5/26/20 the order still shows as Pending even though they have already been paid.