Product attributes Material: 100% natural bamboo Product Size：30*10**21CM(12 inch*4 inch*8 inch) Product Features: 1.Double side super magnetic 2.Non-slip design 3.100% made from bamboo,Pure solid wood manufacturing,Sturdy and Durable and Environmental Protection,Create a Green and Healthy Kitchen 4. 8 inch block Can be placed 5 knives On one side and 10-12 knives on both side Specification for Product Use Note: Our knife holder is suitable for the knife blade length not more than 9 inch,overall not more than 15inch.And knifes only be placed vertically!! This product is designed for common kitchen cutters,It is not suitable for special tools, too long or too heavy.