The 10A is a straight edged blade with a strong tip and fits Handles 3, 3L, 3 Graduated, 5B, 7, 9 and B3.The Swann-Morton 10A blade became the tool of choice for graphic artists for decades until the desk top design packages changed the face of the design and print industry. In addition to cutting up type and Letraset it became noted that a sterile version was perfect for minor surgical procedures, like digging out splinters and thorns and eventually it found its way into the theatres alongside the more popular shapes .