• B Type Turning Holder BTJNL/R2525 M16 Suitable to TNMG1604 Insert. 
• Black Color , High Quality , Left Hand/right hand/neutral.
• Suitable Insert TNMG1604 Try Tabikut Brand Turning Insert.
• spare parts remain same for right left 2020 shank or 2525 shank
• B type are more strength than M type.