VID 天然ダイヤモンド両面ブロック 200×83.4×10×1×1 AC4 ― AC4 160/125 ― 50/40 B2-01 ― B1-10 100% 147.2カラット

特徴：

• Abrasive Material: 100% Natural Diamond (Grade AC4)
• Type: Double-Sided Sharpening Block
• Grit Size (Microns): 160/125 (Side A) / 50/40 (Side B)
• Grit Size (Standard): 85 / 400
• Bond Type: B2-01 (Side A) / B1-10 (Side B)
• Diamond Concentration: 100%
• Total Diamond Weight: 147.2 Carats