PortwestSKU: PW-KN91NCR

Portwest KN91 Replacement Blades - 10 Pack

$2.99

The Portwest KN91 Replacement Blades - 10 Pack are precision‑engineered carbon‑steel blades designed for use with the KN30 and KN40 safety cutters. Each pack includes ten ultra‑sharp, long‑lasting blades that deliver clean, consistent cuts for high‑volume industrial use. Built for durability and superior edge retention, these blades ensure your cutters stay performance‑ready with minimal downtime.


Key Features:



  • Carbon‑steel construction for exceptional sharpness and durability.

  • Compatible with KN30 and KN40 cutters for easy replacement.

  • Superior edge retention supports long‑lasting performance.

  • 10 blades per pack for efficient stocking and reduced downtime.

  • Ideal for heavy, everyday cutting tasks across multiple industries.

Ordering Questions

When will my order ship?

We aim to have all non-imprinted orders shipped within 3-5 business days after the order is placed!

Once your order ships, you’ll receive a confirmation email with tracking details. At this time, we ship to addresses within the contiguous United States.

We ship via UPS or USPS, depending on the size, weight, and destination of your order. Shipping method selection is handled automatically to ensure the best delivery option.

Please note that delivery times shown at checkout are estimates and begin once your order has shipped. Shipping delays caused by the carrier or weather are outside of our control.
How do returns work?

We want you to feel confident in your purchase. If an item doesn’t fit or isn’t quite what you expected, you can request a return directly from your order page using the 'Request Return' option.

Once your request is submitted, it goes directly to our Support Team. If the item is eligible, we’ll email you with return instructions. An approved RMA is required before sending any items back.

Return requests must be submitted within 30 days of receiving your order.

Returned items must be in new, resalable condition with original tags and packaging. All returns are inspected upon arrival to ensure they meet eligibility requirements before a refund is issued.

Please note:

  • Custom or imprinted items are final sale and not eligible for return
  • Return shipping is the customer’s responsibility
  • We recommend using UPS, USPS, or FedEx and keeping your tracking number, as we cannot be responsible for lost return shipments
Do you offer discounts for large orders?

We do! If you’re planning a large order of 50 units or more, you can share the details by clicking here to open our Bulk Request Form. We’ll put together a tailored quote for you and follow up with any questions to keep everything moving smoothly.