Inserts standard 6.35mm/1/4" 28 positions.Use this holder to easily organize your screwdriver bits.The denture chuck is made of strong plastic as it is a durable material with natural heat and chemical resistance.The hinged jaws open fully, giving you easy access to all drill bits.product descriptionfeature:While they make our nails prettier, the wide variety of nail drill sets and many abrasive belts make it difficult for us to store them and help us find them quickly.So this collet can help solve your problem and make storage easier.Large storage space to meet your various needs. High quality material, more resistant to drop and waterproof. Comfortable to wear and lighten the burden.Specification:Weight: 200 gramsmaterial: plasticPackage Included:1 X denture tool holder (with 28pcs bits)Notice:1. Due to manual measurement, please allow a little deviation.2. Due to the different display and lighting effects, please allow a slight color difference.hello, guys, thank you for visiting my store.We guarantee the quality of our products.we will be ready to reply you ASAP.