Lansky, double-sided diamond sharpening stone with handle, FP-1260

This double-sided sharpening stone is easy to carry because the handle folds around the stone. It is quite compact so the sharpening surface is well protected when you are not using the sharpening stone. The handle is ergonomically shaped and fits comfortably in your hand. The back of the handle fits nicely together when the handles touch. This makes the handle very solid and it does not feel like two separate parts. This seems like a small detail, but increases the sharpening comfort enormously.