Michael Janich’s supersized Yojimbo, now in CPM SPY27.

Michael Janich’s YoJumbo builds on his trendsetting Yojimbo 2, scaling it up by more than 20 percent and refining its ergonomics to fit a wider range of hand sizes. Its dramatic Wharncliffe blade is rendered in Spyderco’s proprietary CPM-SPY27 steel, a cobalt-enriched particle metallurgy stainless steel exclusive to Spyderco.

The deeply hollow-ground blade takes full advantage of SPY27’s toughness, edge retention, and corrosion resistance, with a fully accessible Trademark Round Hole for swift, ambidextrous opening. Skeletonized stainless liners support a high-strength Compression Lock, nested in coarse peel-ply G-10 scales in signature cobalt blue, with a four-position pocket clip.

Product Dimensions

• Overall Length: 9.29in 236mm
• Closed Length: 5.37in 136mm
• Blade Length: 3.98in 101mm
• Cutting Edge: 3.98in 101mm
• Blade Thickness: .145in 3.7mm
• Weight: 5.3oz 150g

Features

• Blade Steel: CPM® SPY27®
• Blade Style: Wharncliffe
• Blade Grind: Hollow
• Handle Material: G-10
• Locking Mechanism: Compression Lock
• Opening Method: Trademark Round Hole™ for swift, ambidextrous, one-handed opening
• Pocket Clip: Four-position — tip-up/tip-down, left/right carry
• Country of Origin: United States