This hexagon-shank screwdriver bit holder is made of aluminum alloy, which has high hardness, good toughness, and durability. .The surface is smooth and shiny, beautiful and not easy to rust.The screwdriver bit holder can be inserted into the hexagonal shank twist drill bit, which is easy to use and very convenient.The screwdriver bit holder is small size, can be taken with you and can be placed in many tool bags.Specification:Condition: Brand NewItem Type: Key Ring Material: Aluminum Alloy Purpose: Can insert hex shank twist drill bits etc. Color: Black, Yellow, Blue, Silver, Red, Green Aperture: Approx. 7mm/0.3inch Package List: 6 x Aluminum Alloy Key Chain Extension Bars 1 Carabiner Scope of Delivery: 6 pieces (one carabiner) Note: The data is all manually measured, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual item received shall prevail.