Keep your edge

DIAMOND TRI-SEPS

The edges of this diamond sharpener fit both large and medium serrations; beveled surfaces at ends ensure proper sharpening angle. 2 1/3 ounces, 4 1/2 by 3/4 by 3/4 inches. $22. (800) 548-7427, www.gatcosharpeners.com.

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MULTI-QUICK SHARP

Diamond-coated, 600-grit rods sharpen faster than ceramic (but also wear out quicker). Textured grips, locked positions are also pluses. 6 1/2 ounces, 6 by 2 by 1 inches. $32. (800) 950-6161, www.gerberblades.com.

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TRI-ANGLE 204MF

Two medium-grit and two fine-grit alumina-ceramic whetstones, two safety rods, excellent instructions are all good. But relatively heavy at 14 1/2 ounces.

7 1/2 by 3 by 2 inches. $69. (800) 621-1065, www.spyderco.com.

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DIAMOND TAPER

A diamond-coated, 600-grit rod for the minimalist -- it weighs a mere 1 ounce and is smaller than a fountain pen (4 5/8 by 5/8 by 5/8 inches). With groove for fishhooks. $10.50. (800) 326-2825, www.buckknives.com.

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