Smith’s new Diamond Retractable “Plus” sharpener features a diamond-grit sharpening rod that is tapered to fit a wide range of knives, including both serrated and straight-blade models. The device also features a special sharpening groove for honing hooks, plus built-in scissors, Phillips-head screwdriver, flat-head screwdriver and bottle opener. But perhaps the neatest thing about the Diamond Retractable “Plus” is that the sharpening rod retracts into the handle for convenient storage. The length of the rod can also be adjusted to fit different knife blades via the push-button control. The new sharpener comes with a rugged carrying pouch and retails for $20.58. Smith Abrasives, Inc, Hot Springs, AK; (800) 221-4156; www.smithabrasives.com.