4-3/8 Hole Saw for 4" Recessed Lights, Carbide Grit Holes Saw Cutting Plaster Drywall Ceiling Sheetrock

HLOFIZI's 4-3/8 inch hole saw is the perfect size for 4" light installation. The item comes with a mandrel, and the wrench is English. The set screw is ARBOR that fits into 1/2 inch. The central pilot bit's diameter is 1/4 inch. Customers had mixed experiences with this item. One had missing parts, while another praised the cutaway design and the hole saw's ability to start at a point and effectively remove debris. Customers were generally pleased that the hole saw worked well with little effort on their part. However, some customers found that the drill bit dulled too quickly and began having difficulty punching through plaster, the allen wrench that doesn't want to come out once inserted or that assembling it with the drill bit can be tricky.