Harimoto SZLC vs SALC

Two Butterfly “Super Harimoto” inner blades look almost identical on paper: inner fiber + kiri core. The real differences are fiber type and thickness—and those small numbers change speed, hold, and soft/hard feel more than people expect.

Assembled Butterfly-style setup

Same skeleton, different engines

	Harimoto SZLC	Harimoto SALC
Layup	Inner fiber + kiri core	Inner fiber + kiri core
Fiber	SZLC	SALC
Thickness (listed)	6.2 mm	5.9 mm
Fiber character	Tougher / higher rebound, faster	Longer pause on contact, easier spin
Speed : arc (rough read)	~6 : 4	~4 : 6

A 0.3 mm thickness gap is huge on a blade. It pushes hardness feel and spring:

Thicker blank → easier high rebound
Thinner blank → softer, more dwell-oriented feel

Japanese trial chatter so far: SALC still felt a bit firm, but still holds the ball. Many players also describe SALC as not ultra-transparent—fine, as long as dwell is enough.

!!! tip "How to choose" Want more first-speed and a snappier release → lean SZLC.
Want clearer hold and easier loaded arcs → lean SALC.

The outer wood looks close to Freitas-style limba color. One reason for the finish look: Butterfly blanks usually get wood-sealer before leaving the factory.

Bottom line

For the two Super Harimotos, start with the simple matrix: SZLC = faster / springier, SALC = more hold / spin-friendly, amplified by 6.2 vs 5.9 mm. Everything else is fine-tuning once that direction matches your loop distance and force habits.