Five Swann-Morton stainless steel scalpel blades (non sterile) individually wrapped in vapour phase inhibitor paper.
The rounded tip of the Swann-Morton No. 10 blade will contact the workpiece on the cutting edge regardless of the cutting angle, so you tend to cut with the edge rather than the tip and the blade lasts longer.
The short Swann-Morton No. 10A blade is quite stiff, so it feels a little more purposeful than the longer blades - a good choice for cutting thicker materials.
The long slender point of the Swann-Morton No. 11 blade is ideal for reaching into joints to transfer marks from one component to another.