Oumefar 1pc 8mm to 6.35mm Router Bit Collet Chuck Adapter Steel Carving Bit Sleeve Black Wood Milling Chuck for CNC

【High Quality Material】Our sleeves are made of high-quality stainless steel, which is flexible and wear-resistant 【High Precision Process】After the milling cutter adapter is processed by heat treatment and precision grinding, the parts have high dimensional accuracy, high-precision clamping force, and good holding stability 【Effective Performance】The collet has good elasticity, can be slightly deformed to clamp the milling cutter head, and its high wear resistance makes it able to withstand a long time of mechanical work 【Widely Applications】Our adapters can be used for engraving machine tools, engraving machine ER chucks, CNC router tool Adapter 【Specifications】Material: Steel--Diameter:8mm / 0.31"(outer)--6.35mm / 0.25"(inner)--Size: 2.5 x 0.7cm / 0.98 x 0.27"---Weight: 5g(approx.)