Features: • Blades easily convert from lamp to fiber optic illumination, making upgrading economical • (Mac, E. Mac and Miller only) • Repairable, allowing replacement of damaged electrical components for a fraction of the cost of a replacement blade (Mac, E. Mac and Miller only) • Single-piece stainless steel blades ensure blade integrity (no soldered joints) • (Mac, E. Mac and Miller only) • curved blade. .