Blades for replaceable blade planes are produced from fine rolled steel, heat treated and ground to a razor sharp edge ready for use. 3 types are available: STA012376 - Convex, for general purpose work. STA012378 - Straight, for rebating or narrow work. STA012379 - Special, with a second bevel. This makes it ideal for plastic laminates. The straight one for rebating or narrow edges. Suitable for RB10 replaceable blade plane. 112100. Card of 5. STA012378