Ai-Mini Flipper Folding Scalpel #24 Blades, ABS Handle with Liner Lock Micro Size - Overall Length:130mm/5", Blade Length:56mm/2.2", Handle Length:72mm/2.8",0.5oz Versatile Carry - Carry this on your key chain or in your 5th pocket in you're jeans, at .5 oz you can carry one anywhere Never Need Sharpen - If you need an EDC knife, but hate having to sharpen it, then this is the one for you! When the blade gets dull just swap it out for a brand new razor sharp blade and you're good to go! Precise and Durable - Minimalist shape handle is easy to hold for all utility tasks like box cutting, package opening, hobby DIY, and craftwork. Safety Features - Solid liner lock and inside ball detent hold the titanium blade holder in place when completely unfolded or closed to keep you safe while using it. SPECIFICATIONS: Compatible with: #18 #19 #20 #23 #24 #25 Scalpel Blade, You can also use #21 #22 #22A #36 #60 on the blade holder， but it cannot be folded in the handle. Overall Length:133mm/5.2" Blade Length:56mm/2.4" Handle Length:77mm/3" Weight:0.5 oz Comes with 10 extra #24 blades!