Remove stripped micro screws from phones and electronics with the 2UUL SD90 carbide extractor drill set. Two-step drill & extract system with a solid brass collet handle. Two-step extraction system — One carbide bit cuts a clean pilot hole in the damaged head; one serrated extractor bit grips it and reverses the screw out. Two bits, one handle, no tool-swapping mid-job. Tungsten carbide, abrasion-resistant — Ground from tungsten carbide so the cutting edges survive repeated