Best Spline-shank Bits of 2025

The US PRO Spline Bit Set features a power socket SCH impact screwdriver with a 1/2" drive, making it perfect for high-torque applications. Constructed from top-quality Chrome Molybdenum, these bits offer exceptional durability and strength. They are designed to fit M14, M16, and M18 mm sizes, ensuring versatility for various tasks. Available in lengths of 40 mm and 75 mm, this selection allows you to tackle both tight spaces and deeper fittings with ease.

The Laser 0592 Spline Bits set includes five essential spline bits, measuring 30 mm in length, covering sizes M5, M6, M8, M10, and M12. This variety allows you to tackle numerous tasks efficiently, whether you are working on automotive repairs or various assembly projects. The set also comes with a 3/8 Inch D x 10 mm hex bit adaptor, made from durable chrome vanadium, providing excellent strength and longevity. Additionally, it is conveniently supplied in a metal storage case, ensuring that your bits are organised and easily accessible whenever needed.

The AB Tools Spline Bit is a 12mm spline bit designed for various fastening tasks. With a length of 30mm, it offers ample reach for tight spots, making your jobs easier. The 10mm shank ensures a secure fit in your tools, reducing slippage during use. Additionally, its hardened tip enhances durability and longevity, allowing you to work confidently without worrying about wear and tear. This bit is crafted from chrome vanadium steel, providing strength and resistance against corrosion.

The BGS 4853 Spline Bit is made from durable chrome vanadium steel, ensuring longevity and strength for your tasks. With a profile of Spline (for XZN) M10, it is specifically designed for effective use with various fasteners. Measuring 30 mm in length, this bit provides a perfect balance of reach and control, making it easy for you to work in tight spaces. This product is ideal for those who need reliability and precision in their toolkit.

The Blue Spot Tools Impact Spline Bits are crafted from resilient S2 steel, ensuring exceptional durability and strength for your toughest tasks. With heat treatment processes, these bits offer enhanced performance, making them ideal for demanding applications. You can conveniently use them with ratchets, breaker bars, and air tools, providing versatility in your toolkit. This means you can tackle a variety of jobs with confidence, knowing you have reliable tools at your disposal.

The BGS 4862 Bit is crafted from durable chrome vanadium steel, ensuring longevity and reliability during use. With a length of 75 mm, this bit is designed for easy manoeuvrability in tight spaces. Its spline profile, specifically for XZN applications, offers a secure fit, reducing the risk of stripping fasteners. This feature is particularly useful when working on specialised fasteners, providing you with the convenience of a precise and efficient connection. Overall, the BGS 4862 Bit is an essential tool for any toolkit.

The BGS 4346 Bit Socket is crafted from durable chrome vanadium steel, ensuring long-lasting performance for your tasks. Its knurled design provides a secure grip, making it easier for you to handle and use in tight spaces. With a spline profile specifically designed for XZN M16, this socket is ideal for a range of applications. At a convenient length of 55 mm, it allows you to reach difficult areas without hassle, making your work more efficient.

The BGS Spline Bit Socket is crafted from durable chrome vanadium steel, ensuring longevity and strength for your tasks. Its knurled design allows for better grip, making it easier for you to handle and apply torque. With a profile designed specifically for XZN M10 fasteners, this socket is perfect for those tricky jobs. Its satin chrome plating provides a smooth finish that resists corrosion, helping you maintain the tool's appearance and functionality over time.

The BGS Spline Socket is expertly crafted from chrome vanadium steel, ensuring durability and longevity for your tasks. Its knurled design provides a firm grip, allowing you to handle it comfortably and efficiently. With a profile specifically designed for Spline (XZN) M8, this socket is ideal for various applications, making it a versatile addition to your toolkit. Its satin chrome plated surface finish not only enhances its appearance but also offers corrosion resistance, ensuring you can rely on it for years to come.

The Draper Spline Insert Bit is an essential tool for anyone using Mechanic's Bit Sets. Designed with expert quality in mind, these 10mm insert bits provide a reliable and durable option for various driving tasks. The M10 x 30mm size ensures compatibility with a range of sockets, making it versatile for different applications. By choosing this insert bit, you benefit from improved efficiency and precision in your work, streamlining your mechanical projects and enhancing your overall productivity.