1MULTIFUNCTIONAL HOUSEHOLD TOOLS: This set contain 37 different sizes of excellent S2 screw bits for a variety of home repair and DIY projects 2DURABLE MATERIAL: The screwdriver bit set is made of excellent S2 alloy tool steel material, durable and non deforming to ensure long service life 3PORTABILITY AND EASY STORAGE: This set is designed with a dedicated slot for each screw bit for easy storage and use, provide great convenience for your work 4PACKAGE INCLUDE: Combination screwdriver bit set come with a connector for connecting different sizes of screwdriver bits. And a storage box for your convenience 5EXCELLENT PERFORMANCE: Screwdriver bit kit is made with fine workmanship, possess compact appearance and stable performance, can make sure durability and stability