Everhard MM21105 - Roofing Membrane Slitter Blades

Built for fast, clean cuts on single-ply roofing, Everhard’s MM21105 replacement blades keep your membrane slitter performing at its best. The industry-standard three-hole design drops into the MM21100 Slitter in seconds, and each blade can be rotated to extend service life—perfect for TPO and PVC trimming on the job.

Key Features

• Purpose-built compatibility: Direct replacements for the Everhard® MM21100 Roofing Membrane Slitter.
• Industry-standard format: Three-hole slitter blades for quick installs and easy rotations.
• Durable edge: Hardened steel construction for sharp, consistent cuts through TPO/PVC membranes.
• Service-life friendly: Rotate the blade to a fresh edge before replacing to maximize longevity.
• Pack size: 5 blades per box (lightweight, easy to keep in the pouch).
• Size fit: Designed to the industry-standard 3-hole dimensions used across roofing slitters.
• Jobsite ready: Compact packaging; ideal for quick blade swaps without breaking workflow.
• Safety first: Always wear cut-resistant gloves and secure the slitter fastener before use.

Compatibility: Replacement blades for the MM21100 Hand-held Membrane Slitter. 

Blade type: Three-hole slitter blades; designed to rotate or replace easily in the slitter housing. 

Pack size: 5 blades per box.

Weight (per box): 0.100 lb (0.05 kg). 

UPC: 095412211052.

Blade dimensions (industry-standard for 3-hole blades): ~43 mm (1.69″) length × 22 mm (0.87″) width. (Everhard doesn’t publish exact blade size; these are the common 3-hole specs used across the industry.) 

Typical thickness range (industry-standard): 0.008″–0.012″

• Remove the old blade from the MM21100 slitter according to the slitter’s blade replacement instructions.
• Align a new three-hole MM21105 blade with the mounting holes in the slitter housing.
• Secure the blade using the slitter’s fasteners (e.g., screws or bolts).
• Rotate or flip to a fresh edge if the blade has multiple usable sides.
• Test the blade with a short scrap piece of membrane to confirm clean cutting.
• If blade dulls, repeat replacement steps with another MM21105 blade.
• Store unused blades in their original box in a dry place to protect edges.

Q: What tool are MM21105 blades compatible with?
A: They’re replacement blades for the Everhard® MM21100 Roofing Membrane Slitter and use the standard three-hole format.

Q: How many blades come in a pack and what’s the weight?
A: Each box includes 5 blades and weighs about 0.10 lb (0.05 kg).

Q: What are the typical blade dimensions?
A: Industry-standard three-hole blades are approximately 1.69 in (43 mm) long × 0.87 in (22 mm) wide.

Q: How do I replace or rotate the blade safely?
A: Loosen the fastener, rotate or swap the blade, confirm correct orientation, then tighten securely. Wear cut-resistant gloves and dispose of used blades safely.