1. to maintain tight tolerances unparalleled performance. 2. Accessories steel is good, long service life, thus reducing the user costs of the tool. 3. high grip strength, impact resistance and strong, clear speed advantage in cutting off a large margin and processing. 4. User clamping and convenient way to replace, only a key to replace the blade and pad. 5. Practical and a of processing environments, even in very dirty environments such as cast iron also has good functions. Model: SER2020K16 Wrench: T 15 Accept Inserts: 16ER AG60 (20 pcs) Suitable For: Semi-, Colour:black Material:alloy steel Size:125 x 20mm Package Contents: 2 x SER2020K16 Holder 2 x Red Wrench 20 x 16ER AG60 Blade Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.