The vibration blades are close the Guyver's elbows.

The vibration from them is of high frequency, it will cut through anything even the bio-booster armour.

When in battle the Guyver will lengthen the sword like blades near its elbows by over twice it's original size, allowing the Guyver to cut through opponents or anything else standing in it's way.

It is rare for the vibration blades not to cut through something. But when fighting Chronos's latest combatants like Enzyme, the blade will cut but after that the blades disintegrate e.g. Episode5 (Enzyme) Episode 6 (Hyper Zektoll), Episode 12 (Aptom)