1pc 8mm to 6.35mm router bit chuck clamp adapter steel carving bit sleeve black wood milling chuck for CNC

Sleeves are made of stainless steel, flexible and wear-resistant. Once the cutter adapter is processed by heat treatment and precision grinding, the parts have high dimensional accuracy, high precision clamping force and good holding stability. The pliers have good elasticity, can be slightly deformed to tighten the head of the cutter, and its high wear resistance allows it to withstand a long period of mechanical work. Adapters can be used to engrave machine tools, engraving machine ER mandrels, CNC router tool adapter. Material: Steel. Diameter: 8 mm/0.31 inches (outer), 6.35 mm/0.25 inches (inside). Size: 2.5 x 0.7 cm/0.98 x 0.27 inches. Weight: 5 g (approx.)