It's a professional set with 13pcs bits, which is widely used in automobiles, motorcycles, bicycles repair. It's very useful and practical.<br><br><strong>Features:</strong><br>Precise bits to ensure accurate size.<br>Include 13pcs bits, meeting your different needs for all kinds of repair work.<br>Made of chrome vanadium steel material to reduce abrasion for long-term use.  <br>Chamfered bit tips to endure more strain, which could fit the socket and fastener perfectly. <br>Comes with a sturdy case, easy to store and carry.<br><br><strong>Specifications:</strong><br>Bit Color: Silver<br>Bit Material: Chrome Vanadium Steel <br>Quantity: 13pcs<br>1/4": 37mm Length: T8, T10, T15, T20, T25, T27, T30<br>3/8": 48mm Length: T40, T45, T50, T55, T60<br>1/2": 54mm Length: T70<br>Case Size: Approx. 22 * 11 * 4cm / 8.7 * 4.3 * 1.6in<br>Package Weight: Approx. 574g / 20.2in<br><br><strong>Package List:</strong><br>1 * Case<br>13 * Bits