X-ACTO Replacement Blade of size 11 is compatible with X-ACTO knife and gripster of size 1. It is sold as 40 per pack.
Excel K-1 Light Duty Knife with Safety Cap and 5 Assorted Blades
X-Acto Retractable #1 Knife
Utility Knives from School Specialty
Scissors : Bulk School & Office Supplies : Target
Scissors : Bulk School & Office Supplies : Target
X-Acto® Knife Blades, No. 11 Blade, Pack Of 100 : Paper Trimmer Refill Blades : Office Products
X-Acto Z Series Blades - Size 11, Hobby Lobby
Scissors : Scissors : Page 7 : Target
X-acto #11 Blade 100-Pack
Cutting Tools & Blades, X-Acto #11 Blades
ELMERS X-Acto #11 Blades for X-Acto Knives, Bulk Pack, 500 Blades Per Box (X511) : Paper Trimmer Refill Blades : Office Products
X-ACTO No. 2 Knife has 5 in aluminum handle for medium to heavy work.
X-ACTO Knife with Cap, No. 2, Aluminum Handle
X-Acto : Featured Brands : Target