So, is it 3/16" (4.76 mm) or 5 mm (3.15/16)? It matters if one is using it to square a through mortise cut using a 3/16" spiral up-cut router bit.

I have 4 Narex chisels, three have their width marked in mm, one is marked 1/2" and measures 12,75 mm or 0.5 in, if that is any help. According to the Amazon page for the mortise chisels, they are all marked in mm, and the page says "4 to 5 mm", I would assume that their width is in mm.

Why are the grinds tapered? The back face is wider than the front face by almost 1/32" and the sides are convex and get narrower towards the handle.

I think to make it easier to pry out the waste from the mortise.

I found online reviews that say these 'twist' as they cut (they don't cut straight) - Anyone find this a problem?

I have two mortising chisels of this brand and neither one will twist as they cut. I would suggest checking the squareness of edge and faces.

how long is the chisel

The mortising chisels (1/4 and 5/8" widths) are 11.750 in total length. The blade is half the total length.

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Czech Steel Individual Professional Woodworking Cabinetmakers Mortise Chisel with Stained European Beech Wood Handle Sizes 4, 5, 6, 8, 10, 12, 14, 16 mm 811205-811216 (16 mm-5/8")

Product ID: 145721221

Details

Blade Edge
Bevel
Blade Material
Alloy Steel
Brand
Narex
Handle Material
Beech Wood
Size
16 mm (5/8")

🌳Stained European Beech wood handle with dual steel ferrules

📏Precision bevel ground at 25° for clean cuts

🛠️Rc 59 hardened chrome-manganese steel blade

¥11120

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Description

🪚 Elevate your craft with precision and heritage – the chisel that means business.

VERSATILE SIZE RANGE - Available in 4 mm to 16 mm sizes, empowering you to tackle every intricate cabinetmaking detail with confidence.
TRUSTED CZECH HERITAGE - Crafted by Narex, a revered edge tool manufacturer, blending tradition with modern performance for the discerning woodworker.
ERGONOMIC CRAFTSMANSHIP - Oval cross-section European Beech handle with dual steel ferrules offers superior grip and mallet resistance for heavy-duty use.
PRECISION CUTTING POWER - Bevel ground at an optimal 25° angle with tapered blade thickness for flawless mortise sidewall clearance.
UNMATCHED EDGE DURABILITY - Rc 59 tempered chrome-manganese steel blade ensures long-lasting sharpness for professional-grade woodworking.

The Narex Czech Steel Mortise Chisel features a finely tempered Rc 59 chrome-manganese steel blade, bevel ground at 25° for precision cuts, and a durable stained European Beech handle reinforced with two steel ferrules. Available in sizes from 4 mm to 16 mm, this 12-inch chisel combines ergonomic design with professional-grade performance, making it a trusted choice for cabinetmakers and woodworking professionals.

Specifications

ASIN	B01NBOK155
Best Sellers Rank	#277,537 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #142 in Wood Chisels
Blade Edge	Bevel
Blade Material	Alloy Steel
Brand	Narex
Brand Name	Narex
Customer Reviews	4.7 out of 5 stars 75 Reviews
Handle Material	Beech Wood
Item Dimensions L x W	12"L x 0.63"W
Manufacturer	Narex
Manufacturer Part Number	811204-811212
Model Number	811216
Number of Items	1
Number of Packs	1
Product Dimensions	12"L x 0.63"W
Size	16 mm (5/8")
UPC	791617733084

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¥11120

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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