Jeu de forets hélicoïdaux excentriques à 4 cannelures, queue hexagonale de 6,35 mm, pour bois, marbre, métal et verre

New Four-Fluorescent Eccentric Drill: This high-quality drill set allows for drilling and tapping in one step, significantly improving your project efficiency. Each drill bit is titanium-coated, combining strength and heat resistance to ensure lasting sharpness and extended lifespan. Available in two sizes: Size 1: 3/4/5/6/8/10/12 mm; Size 2: 3/3/4/4/5/5/6/6/8/8/10/10/12/12 mm. The right drill bit helps you complete any task, regardless of size. Drilling Instructions: When using the drill, start by drilling at a low speed. First, apply light pressure to locate the hole, then gradually increase the drilling speed to begin drilling. When you have drilled halfway to the target area, lift the drill bit to continue drilling. This helps dissipate heat and remove chips, thus improving the drill's durability and extending its lifespan. Unique Threading Capability: This drill set features a unique threading design that precisely produces clean, smooth threads with fewer tools or steps required.