Material : Iron + diamond + pvc ABS base 

(Very smooth of the ABS plate . )

Size : 156x20x7mm Outer size /6.14"x0.78"x0.27: inch

Diamond plate size : 150x20x1.5mm /5.9"x0.78"x0.059" inch

Suit for the Apex sharpener of ruixin , you can contract with me to buy . 

Package including : 1 piece diamond whetstone 

8pcs set Apex sharpener Special-purpose whetstone Oilstone 150*20*5mm with the blanks from 240-10000gritUSD 2.99-9.99/piece

150*20*5MM Apex sharpener EDGE Pro whetstone 400 600 1000 grit water stone for edge sharpening systemUSD 9.87/lot

2015 Newest china No.1 Portable 360 Degree Rotation Fixed angle Apex edge knife sharpener 3 whetstoneUSD 59.20/piece

150*20*5MM knife Apex sharpener EDGE Pro whetstone 120 220 400 600 1000 grit water stone for edge sharpening systemUSD 13.38/lot