These Starlock Combo Mini Cut Blades can cut through wood, metal, PVC, fibreglass and carbon. The Fein 35222967090 contains 3 different blades, ideal for cutting smaller recesses and working in tight spots, e.g. for numerous installation jobs, switch installation, model building and more. The blades can cut through wood, metal, PVC, fibreglass and carbon. Compatible with all FEIN Multitools and many popular Multitool brands with Starlock mounting systems such as Fein, Bosch, Festool, Milwaukee and Makita and more. Contains: E-Cut Long Life 183 - Wood and Metal 20mm wide E-Cut Long Life 184 - Wood and Metal 10mm wide 019 - Fibreglass, Wood, PVC and Carbon 10mm