Hey tradespeople and serious DIYers, this Makita double-step sage surface bit is seriously professional-grade for all your drilling needs! The D-40244 model features a 6mm shaft diameter and measures 15.7 inches in total length, giving you plenty of reach for those deep or hard-to-access drilling applications. The double-step sage design is engineered for efficient material removal and clean, precise holes in various surfaces. What I love about Makita bits is the consistent quality - the construction feels solid and durable, capable of handling demanding job site use without failing prematurely. The coro (coronet) style tip provides excellent penetration and reduces walking on surfaces, which means more accurate hole placement. Whether you're working with wood, certain metals, or other materials, this bit delivers smooth, controlled drilling performance. The length is perfect for running wires, plumbing, or any application where you need to drill through thick materials or reach confined spaces. As with all quality drill bits, using the appropriate speed and pressure will maximize both performance and bit life. If you're tired of cheap bits that dull quickly or break under pressure, this Makita surface bit delivers the reliability and precision that professionals depend on. It's definitely worth the investment for anyone who needs dependable drilling performance for serious projects or professional work. Makita's reputation for quality tools definitely extends to their drill bits - this one won't let you down when you need it most!