[Cutting Material]Made of carbide materials, ultra-hardness, super toughness, more wear and edge grinding wheel with ultrafine polishing, edge sharper[Application] 30 degree blade should be recommended for fabric, thin cardboard and leathersuitable for mahogany, vinyl sheet,wood, cameo, faux leather,PVC color board, MDF and other precision relief.Length of lettering knife: 19mmTop of cutter bar: 1.5mmThe top length of cutter bar is about 4mmHandle size: 0.9mmcolour: silver + blackMaterial: tungsten steelPackage Contents:15 x 30 degree blades1 x Blade Holder HousingOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.