Fein 63127092019 TCT Ultra 35 carbide-tipped core bit with QuickIN holder, designed for continuous and serial drilling applications up to 35 mm deep. The conical flute provides efficient chip removal when drilling hard metals, while the 3-flute design delivers smooth, chatter-free cutting and accurate drilling. Its durable HM construction provides a long service life and higher cutting speed than HSS core drills, making it ideal for economical, repetitive workshop use with fewer tool changes. Fein specifies up to 400 holes / 8 m total service life under optimum conditions (Ø18 mm, S235 steel, 20 mm material thickness), helping provide more holes per tool and reduce drilling costs.