DescriptionBrand Name : tuosenOrigin : Mainland ChinaDIY Supplies : MetalworkingCertification : FCC,RoHS,ULModel Number : MC04007adapter collet shank : 6mmrouter collet : 8mmOptional Size : 6.35mm (1/4'')adapter collet shank 8mm 6.35mm 6mm router collet extension chuck adapter High Precision Milling Cutter Accessories6mm/6.35mm/8mm Collet Chuck Engraving Trimming Machine Electric Router Woodwork 100% brand new and high quality. Features: Fine workmanship and stable performance. High strength and hardness. High precision and durable. Make you better, more efficient to process products. Suitable for automobile manufacturing, mold manufacturing, machinery manufacturing etc. Collet Chuck only, other accessories demo in the picture is not included. Specifications: Material: Carbon Steel Optional Size: 6mm, 8mm, 6.35mm (1/4'') 6mm, 8mm Size: approx.10x16.5mm/0.39x0.65in 6.35mm Size: approx.10x20.1mm/0.39x0.79in Color: Black with Silver Quantity: 1 Pc Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you