This is Burrfection's preferred sharpening kit, built on our two favorite Naniwa Pro (Chosera) stones. This Pro Kit includes: Naniwa Sink Bridge IZ-1121 Naniwa Whetstone Holder A-902 Naniwa P-308 Professional Stone #800 Grit Naniwa P-330 Professional Stone #3000 Grit About Naniwa Sink Bridge The Naniwa Sink Bridge is a great way to hold your whetstones directly over your kitchen sink, providing easy access to water. Having your whetstones over sink also makes things neater and cleanup easier. No more water running all over your counter top or workbench. Made in Japan Origin: Japan Model: IZ-1121 Whetstone Length: 130-260 mm (5.1-10.2 in) Sink Depth Fit: 290-550 mm (11.4-21.7 in) Main Unit: SUS304 Stainless Steel Screws: SUSXM7 Steel Protective Cover: PVC About Naniwa Whetstone Holder After years of buying and testing dozens of whetstone holders on the market, this is our favorite. It’s one of the only holders that uses truly stainless hardware, and rails. It also has one of the widest footprint of all whetstone holders, which makes it one of the most stable to use. It will hold all but the largest whestones available. Whetstones that are larger than what this holder can handle, generally will come with their own bases, or are specialty stones that require a much different holder solution. Material: TRP, PP, Stainless Steel Size: 288 x 76 x 36mm Accommodates Whetstones of the following size: Length: 136-218mm (5.35" - 8.58") Width: Max. 76mm (3") About Naniwa P-308 This isour favorite splash-n-go / non-soaking sharpening or medium grit whetstone. It is responsive, fast cutting, and able to handle knives of all Rockwell ratings (testing up to 67 HRC). Very few stones come close to offering this level of performance at any price point. Made in Japan Origin: Osaka, Japan Grit No.: #800 WA Type: Splash & Go Dimension: 210 x 70 x 20mm Weight: 745g Abrasive: white aluminium oxide Cohesive agent: magnesium-bound About Naniwa P-330 This is our all-time favorite whetstone. Period. If he had to pick one whetstone to use for the rest of his life, it would be this one. It’s fast cutting, responsive, and will give your knives a razor sharp, and well-polished edge. Ryky has chosen this whetstone of whetstone of year for a few years running, and is still his go-to whetstone in his personal kitchen. Made in Japan Origin: Osaka, Japan Grit No.: #3000 WA Type: Splash & Go Dimension: 210 x 70 x 20mm Weight: 745g Abrasive: white aluminium oxide Cohesive agent: magnesium-bound