The Endela uses a Back Lock. When the blade opens, a spring-loaded lock bar in the spine of the handle drops into a notch in the blade tang and holds it securely. To close, press the exposed section of the lock bar on the back of the handle and fold the blade, keeping your fingers clear of the edge. The lock works the same for left- and right-handed users.

Spyderco created the Endela to split the difference between its best-selling Endura 4 and Delica 4 Lightweight. With a 3.41-inch blade and a 4.69-inch closed length, it offers more reach than the Delica in a smaller package than the Endura, with the same proven features as both.

Spyderco's SpyderEdge is a fully serrated edge pattern. The serrations grip fibrous materials, so the blade cuts rope, webbing, seatbelt material, and cordage where a plain edge tends to slip. To sharpen it, use the corner of a triangle or tapered rod to touch up each serration from the beveled side, then lightly remove the burr on the flat side. Spyderco also offers factory sharpening service.

K390 MICROCLEAN is a powder metallurgy cold work tool steel from Böhler-Uddeholm, formulated for demanding industrial applications and known for exceptional edge retention. It is not a stainless steel, so it may develop a patina or rust if left wet or dirty. Wipe it clean and dry after use and keep a light coat of oil on the blade. Spyderco marks its K390 knives with a blue handle color.

The C243FSK390 ships as a knife with its four-position pocket clip installed. It is knife only, with no sheath included. Packaging and included items are set by Spyderco and are subject to change.

This Endela is made in Japan. Spyderco warrants that its genuine products are free from defects in material and workmanship for the life of the product. The warranty does not cover loss, theft, accidents, abuse, misuse, improper sharpening, normal wear and tear, or alterations, and broken, lost, or bent metal clips are typically not covered. Shipping to and from Spyderco is the owner's responsibility. Contact Spyderco directly and include the Spyderco Warranty & Repair Form with any return. Knifeworks does not warranty this product independently.