OKNIFE MBS1 4mm Hex Bit Screwdriver Set, 9 PCS Durable S2 Tool Steel Double-Ended Bit Set with Eternal Pencil, Ideal for Opry, D1, U1 Pro Series and Other 4mm Hex Nut Drivers

PREMIUM S2 TOOL STEEL CONSTRUCTION - Each of the 4mm double ended drill bits is made of high-quality S2 tool steel, known for its exceptional hardness and wear resistance. It has durability that is superior to 99% of similar bit bits on the market. Nickel-plated surface ensures superior durability and long-lasting performance, even under heavy use. Versatile MBS1 9-Piece Set: The MBS1 set includes 9 double ended bits in various sizes (T1+△2.3; PH00+PH2; PH0+SL3.5; SL1.5+SL2; H2.5+H3; H1.5+H2; T10+T15; T7+T9; T6+T8), offering the Perfect solution for various sizes of screws. Ideal for Opry series, D1 series and U1 Pro series tools, compatible with other 4mm hex nut drivers. [Eternal Pencil for Enhanced Functionality] Unlike typical bit sets, the MBS1 includes a high-quality eternal pencil made from special materials. This pencil is reusable, requires no sharpening and extends the utility of the set for writing or marking tasks during work. SAFE AND PORTABLE DESIGN - Each bit is held securely in place by TPR rubber sleeves, preventing any unnecessary movement or loss. The set also features a hanging hole for easy storage and convenient portability, ensuring your bits are always within reach. [Durable and Portable] Crafted with sturdy S2 steel, the OKNIFE MBS1 bit set for easy docking and secure storage. With a versatile range of sizes and an additional Eternal pencil, it's perfect for professionals and hobbyists. The set comes in a stylish frosted bag and a convenient toothpaste-style box for easy storage and portability.