COMBINATION WHETSTONE: This knife sharpener has interchangeable sides with 2 levels of coarseness – a 1000 grit (medium) side for sharpening dull blades, and a 3000 grit (fine) side which can hone already sharp knives back to factory sharpness. Take your blades from dull to super sharp using just one product! RUBBER NON-SLIP BASE: Prevents your whetstone from slipping while running your blades across it, minimising the risk of injuries while ensuring precise, easy and comfortable sharpening PROTECTIVE CASE: Extra-hard carry case will protect your whetstone and prevent chipping or cracking MATERIAL: Whetstone is made from Ceramic, which is longer lasting, more durable and much cleaner than conventional Corundum whetstones ROCKINGHAM FORGE: Made and imported by a Sheffield based family company with over 75 years’ expertise in knife making and sharpening