Bosch Standard Large Two-Pin Mandrel for Hole Saws (1-1/4 in. to 6 in.)

Standard Large Two-Pin Mandrel for Hole Saws (1-1/4 in. to 6 in.)

Features

  • Positive-lock design to reduce wobble
  • Accepts standard pilot bits
  • Threads securely to hole saw
  • 7/16 in. shank
  • Fits 1-1/4 in. to 6 in. hole saws
  • Compatible with major hole saw brands

Specifications

Material High Speed Steel
Shank 7/16 in.
Shank Shape Hexagon
Hole Saw Capacity 1-1/4 in. – 6 in.
Pack Quantity 1
Compatibility Fits major hole saw brands

Two-pin mandrel intended for use with hole saws sized 1-1/4 in. to 6 in. The mandrel accepts standard pilot bits and the hole saw threads onto the mandrel and locks in place. A positive-lock design reduces wobble during use.

Model Number: HSBAL

Project Ideas

Business

Cornhole Board Micro‑Shop

Produce regulation cornhole boards with perfectly round 6 in. holes. Batch your process using templates and offer custom paint/vinyl graphics. Sell sets locally and rent them for events to add recurring revenue.


Recessed Lighting Retrofits

Offer clean, dust‑managed ceiling cutouts for modern canless LEDs (typically 4–6 in.). The positive‑lock mandrel reduces wobble over drywall for precise, repeatable holes. Package pricing includes layout, cutting, and trim fitment.


Door Lockset & Deadbolt Bore‑Outs

Mobile service to add or replace locksets using a 2-1/8 in. hole saw and door jig. Upsell premium hardware, handles, and strike reinforcements. Market to property managers, Realtors, and homeowners.


Desk/Conference Table Grommet Installs

Retrofit offices with 2–3 in. cable grommets and AV pass‑throughs. Provide same‑day on‑site service, tidy wiring, and optional under‑desk trays. Great for coworking spaces and home offices.


Vent & Pass‑Through Cut Services

Cut clean 3–4 in. openings for dryer vents, cabinet pass‑throughs, fan intakes, or shore‑power ports in vans/tiny homes. Include sealing/trim kits and basic weatherproofing. Partner with HVAC and appliance installers for referrals.

Creative

Layered Wall Clock

Cut multiple wood circles (6 in., 5 in., 4 in.) from contrasting woods and stack them with thin spacers for a stepped, modern clock face. The pilot bit keeps layers centered and the positive-lock mandrel minimizes wobble for crisp edges. Drill the center for a clock movement, finish, and hang.


Cedar Herb Wall

Make a vertical herb planter: cut 3–3-1/2 in. holes in a cedar board to accept wide‑mouth mason jar rings. Screw rings in from the back so jars twist in/out for watering. Label each herb and mount the board in a sunny kitchen spot.


Log Tealight & Mini Planter Holders

From a small log or chunky offcut, drill 1-1/2 in. recesses about 5/8 in. deep for tealights, or 1-1/4–1-3/4 in. holes through for mini glass cups/propagation vases. The mandrel’s stability helps keep recess depths consistent across a row.


Porthole Birdhouses

Build rustic birdhouses from fence pickets and cut clean 1-1/2 in. entrance holes for chickadees/bluebirds. Add a small perch, hinged clean‑out, and weatherproof finish. The secure-thread mandrel ensures round, tear‑free openings.


Modular Wine/Display Rack

Create a wall panel with a grid of 3-1/4 in. circular cutouts to cradle standard wine bottles or display pieces. Sand the rims, back the panel with LED strip lighting for a halo effect, and mount with French cleats.