ISHS Series brazed carbide hole saw heads from Relton cut hard plastic and stucco cleanly, sold head-only as replacements or size add-ons in diameters from 1 in. through 4 in. with a 2 in. cutting depth. The brazed carbide teeth cut polycarbonate, acrylic, PVC, fiberglass-reinforced plastic and abrasive stucco with minimal chipping, heat buildup or burrs.

The head-only format keeps a size run affordable once you own the arbor: each head mounts to a quick-change arbor and runs in 3/8 or 1/2 in. drill chucks depending on the adapter. Starting from scratch? The complete ISHS hole saw includes the shank, and the matching FHS wood and fiberglass heads are stocked head-only as well. Both series file under our electric hammer tools category.

• Diameters from 1 in. through 4 in. with a 2 in. cutting depth
• Brazed carbide teeth cut polycarbonate, acrylic, PVC and fiberglass-reinforced plastic without chipping or cracking
• Clean, low-burr holes in stucco for outlet, pipe and vent penetrations
• Head only mounts to a quick-change arbor; fits 3/8 and 1/2 in. drill chucks by adapter
• Chip evacuation features reduce clogging and heat for smoother cutting
• Stocked head-only by Crowder Supply in Denver in the popular diameters