EX 55 Precision Performance Replacement Blades by Feather The cut is pure because the blades are ground and honed in two steps, at the same degree as hand made shears. They're ice- tempered for long lasting performance. When they dull just change the blades. The blades are identical giving you exactly the same surgical quality blade after blade. They'll automatically adjust to the scissors handle at it proper torque and alignment so there is no difference in the feel or performance of your shears.