Features
- Integrated one-piece design (no separate arbor or pilot bit required)
- 1/4-inch hex shank compatible with most drills and impact drivers
- Bi-metal construction with 8 TPI teeth for cutting sheet metal
- Depth stop to limit breakthrough and improve hole-depth control
- Pilot bit spring for automatic plug ejection
Specifications
| Included Sizes (In) | 7/8, 1-1/8, 1-3/8 |
| Shank | 1/4-inch hex |
| Teeth Per Inch | 8 TPI |
| Working Length | 1.75 in |
| Material | Bi-metal |
| Pack Quantity | 3 |
| Part Number | HTWS |
| Weight | 0.40 lb |
| Upc | 000346398380 |
| Intended Use | Cutting in sheet metal; compatible with high-torque impact drivers and drills |
Related Tools
Related Articles
Three-piece hole saw set with integrated one-piece construction and 1/4-inch hex shanks. Blades use bi-metal construction and 8 TPI teeth for cutting sheet metal. Designed for use with drills and high-torque impact drivers; includes depth stop and pilot-bit spring for plug ejection.
Model Number: HTWS
Project Ideas
Business
Mobile Electrical Knockout Service
Offer on-site conduit knockouts in panels and metal enclosures for electricians, solar installers, and facility maintenance. The 7/8, 1-1/8, and 1-3/8 inch sizes align with standard 1/2, 3/4, and 1-inch EMT knockouts. The depth stop protects interior components, and impact-driver compatibility lets you work quickly on ladders. Upsell grommets, strain reliefs, and hole labeling.
Van/RV Upfitting: Weatherproof Cable Glands
Specialize in installing cable pass-throughs for solar, comms, and camera systems in vans, RVs, and boats. Provide sealed glands, rust treatment, and color-matched touch-up. The one-piece hole saw speeds rooftop work and the pilot spring boosts throughput. Offer package pricing per gland with warranty against leaks.
Small-Batch Metal Lantern & Shade Studio
Produce and sell perforated steel lanterns and lampshades online and at markets. The hole saw set delivers bold, consistent circular motifs that stand out from laser-cut patterns. Batch drilling with plug ejection keeps costs low. Sell custom sizes/finishes, and offer wholesale pricing to cafes and event planners.
Food Truck and Bar Retrofit Installations
Provide clean holes in stainless/steel truck walls and kiosks for tap shanks, drains, and wiring pass-throughs. The depth stop avoids damage to insulation and wiring behind panels. Package services: hole, install hardware, sealant, and finish trim. Bill per hole plus hardware, with after-hours service for operators.
Custom IoT/AV Enclosure Shop
Buy off-the-shelf metal project boxes and add precise conduit/cable knockouts to customer spec for AV integrators, makers, and IoT startups. Stock common patterns (7/8, 1-1/8, 1-3/8 in) and deliver labeled, deburred, ready-to-wire enclosures. Market fast turnaround and consistent finish thanks to the one-piece design and automatic plug ejection.
Creative
Perforated Industrial Lanterns
Cut repeating patterns of 7/8, 1-1/8, and 1-3/8 inch holes into thin steel or galvanized sheet to create dramatic light spill. The depth stop prevents blow-through when working close to bends, and the pilot-bit spring auto-ejects slugs so you can produce lots of clean holes quickly. Deburr edges, add a simple folded seam, and suspend an LED puck or Edison bulb inside for a boutique loft aesthetic.
Upcycled Steel Drum Bar With Taps
Convert a small steel drum into a bar cart or kegerator by drilling precise tap and bulkhead holes. The included diameters match many shank/bulkhead requirements (7/8–1-3/8 in). Use the depth stop to avoid scarring inner liners and the hex shank in an impact driver for fast work. Finish with grommets or stainless escutcheons for a polished, leak-resistant fit.
Smoker/Grill Airflow Mods
Add adjustable intake/exhaust vents to a metal smoker or kettle grill. Use 7/8 or 1-1/8 inch holes for vent arrays and cover them with a sliding plate. The bi-metal, 8 TPI teeth handle BBQ-grade sheet metal cleanly, and the spring-ejected plugs keep the bit clear for consistent hole spacing. Improves temperature control and smoke quality.
Van/RV Cable Pass-Through Panel
Create clean, grommeted holes in body panels or roof skins for solar, antenna, and camera cables. The included hole sizes pair well with standard cable glands and conduit fittings. The depth stop helps prevent accidental interior damage, and the one-piece design makes overhead drilling simpler when working on a ladder.
Modern Metal Birdhouse
Build a minimalist birdhouse from thin steel or aluminum with species-appropriate entry holes (e.g., 1-1/8 inch for bluebirds). The hole saw set gives perfectly round, repeatable entrances; finish with a wooden or plastic liner ring/grommet for safety. The pilot spring speeds plug removal when making access and ventilation openings.