Replacement straight blades are designed for use with Carl DC-210 12 DC-220 15 DC-238 18 and DC-250 25 Heavy-Duty Rotary Series Trimmers. K-28/2 blades cut through paper film fabric and felt. Premium steel blades ensure a precise cut. Unique packaging allows you to change or replace blades without ever having to touch the sharp edge. CARL Rotary Trimmer Straight Blade Set Silver 1 / Set (Quantity)