The object
Sal Glesser created Spyderco’s C01 Worker folding knife, combining a round blade hole for one-handed opening with a carry clip and optional serrated edge. Spyderco calls these features a revolution in modern folding-knife form and function. The company’s current history continues to identify Glesser as its founder and designer.
01
What Sal did
created the C01 Worker’s round opening hole, pocket clip, and early serrated-edge configuration for one-handed folding-knife use
02
Why it matters
The Worker’s opening hole and pocket-clip layout set a widely adopted pattern for modern one-handed folding knives.
03
Living-status check
Spyderco’s current company history names Sal Glesser as founder and shows his continuing designer mark, accessed in July 2026.