Startrite 310mm Planer Blades Knives - Set of 3 Length: 310mm Width: 25mm Thickness: 3mm Material: High Speed Steel No. of blades in a pack: 3 blades These are HSS Planer Blades to suit the Startrite planer machines using the 310mm Planer Blades and a wide range of other planer blocks from 4 sided moulders to surface thicknessers. These are the industry standard 18% cobalt and are supplied in matched pairs in plastic packaging for transportation protection. Most other standard lengths of HSS planer blades can be found within our online shop.