3 Pack Retractable Utility Knife Set — 3 Knives + 30 Spare SK5 Blades
A proper box-cutter set that covers every job instead of just one. You get three knives — an 18mm heavy-duty snap-off, a slim 9mm for detail work, and a retractable trapezoid cutter for thicker material — plus 30 spare SK5 steel blades, so you can snap to a fresh edge rather than fighting a blunt one.
SK5 is a high-carbon tool steel that holds its edge well, and each handle has a thickened plastic shell over a metal blade track, so the blade stays rigid under pressure instead of flexing. Ideal for opening cartons, trimming carpet and underlay, scoring plasterboard, cutting vinyl, and general workshop and moving-day use.
Key Features
- Three Knives, Three Jobs: 18mm snap-off for heavy cutting, 9mm for precise detail work, and a retractable trapezoid cutter for dense materials.
- 30 Spare Blades Included: 10 x 18mm snap-off, 10 x 9mm snap-off and 10 x trapezoid blades — a long-lasting supply.
- SK5 High-Carbon Steel: Hardened tool-steel blades that stay sharper for longer than standard blades.
- Metal Blade Track: Internal metal guide keeps the blade straight and stable under load.
- Safety Lock & Telescopic Slider: Lock the blade at your chosen depth, or fully retract it into the handle when you are finished.
- Thickened Grip Shell: Chunky moulded handle with a rubberised thumb slider for better control.
- Hang Hole: Easy to store on a hook in the shed, garage or toolbox.
- High-Visibility Orange: Easy to spot on a busy workbench or job site.
What's in the Box
- 1 x 18mm retractable snap-off utility knife
- 1 x 9mm retractable snap-off precision knife
- 1 x retractable trapezoid-blade utility knife
- 10 x 18mm spare snap-off blades
- 10 x 9mm spare snap-off blades
- 10 x spare trapezoid blades
Specifications
| Brand | HORUSDY Professional Tools |
| Set Contents | 3 knives + 30 spare blades |
| Blade Material | SK5 high-carbon steel |
| Handle Material | Reinforced ABS plastic with metal blade track |
| Blade Sizes | 18mm snap-off, 9mm snap-off, trapezoid |
| Colour | Orange / Black |
| Packaging | Retail backing card, approx. W40cm x H10cm x D1.8cm |
| Condition | Brand new |
Safety
These knives have extremely sharp blades and are intended for adult use only. Always retract or lock the blade when not in use, cut away from your body, and keep the set well out of reach of children. Dispose of used blades safely in a sealed container — never loose in a rubbish bag.
Frequently Asked Questions
Q: How many blades come with the set?
A: You get 30 spare blades in total — 10 x 18mm snap-off, 10 x 9mm snap-off and 10 x trapezoid — on top of the blades already fitted in the three knives.
Q: What is SK5 steel and why does it matter?
A: SK5 is a hardened high-carbon tool steel. It takes a fine edge and holds it longer than the softer steels used in budget blades, so you get more cuts before needing to snap or swap.
Q: Can these cut carpet and plasterboard?
A: Yes. The trapezoid-blade knife is the one to reach for on carpet, underlay and dense board, while the 18mm snap-off handles cartons, insulation and general cutting. The 9mm suits lighter, more precise work.
Q: Do the blades retract fully?
A: Yes — all three knives retract, and the snap-off models include a locking slider so you can set the blade depth or close it away completely for storage.
Q: Are replacement blades easy to find?
A: Yes. The 18mm and 9mm snap-off sizes are industry standard, so refills are widely available — though with 30 spares included you will not need them for a long while.
Shipping
Free shipping for NZ orders over $70, AU orders over A$120
Dispatched from our NZ warehouse — please allow 1-3 working days for packaging.
NZ orders under $70: $8.99 flat rate — Standard Courier with Tracking, estimated delivery 1-5 working days (urban), 2-7 working days (rural)
AU orders under A$120: A$13.99 — NZ Post Standard with Tracking, estimated delivery 5-10 working days
Returns
This item is eligible for full refund. Please see our Returns Policy for details.