K1730 - Kershaw Groove (Plain) Knife. Created by custom knife maker RJ Martin for Kershaw, the Groove has a unique 3-D machined blade. It’s design is highly attractive with a rustic outdoors appeal and is a signature Martin design. The machined blade is highly durable with excellent rust resistance and it will certainly stay sharp for a long time with proper care. G-10 overlays on the handle help to ensure a super secure grip. 