Hatsukokoro Ryusui by Nigara - Blue 2 Damascus Nashiji 210mm GyutoOur Comment The thin kiriha bevels create small secondary bevels that experience minimum pressure at the cutting edge. The slightly concave kiriha bevels create a razor like knife and help maintain small secondary bevels over a series of sharpenings. Edge retention: Poor Average Good Great Excellent Corrosion Maintenance: Low Average High Specifications Blade Length: 200mm Overall Length: 345mm Blade Height: 49mm at heel Spine Thickness: 3. 6mm at