This Manual blade allows you to cut a variety of materials with a thickness of up to 1mm using your Silhouette Portrait 3 and Cameo 4 series machines without needing an adapter. These materials include paper, cardstock, vinyl, vellum, heat transfer material and sticker sheets.Features & Benefits Includes 1 Manual Blade Designed for the Silhouette Portrait 3 and Cameo 4 series machines Specification Blade Material: Tungsten Alloy (High-performance) Adjustment Method: Manual adjustment (turned by hand) Blade Length Range: 0.1 mm - 1 mm