Bits for internal screws TX 25, 27 and 30. Internal six-edge screw bits 3, 4, 5, 6, 8, 10mm. Socket 8, 9, 10, 11, 12, 13, 14, 15mm. Union unit 1/4 "- 3/8" and 3/8 "- 1/4". Small insert in 1/4 ", large in 3/8". https://uniortools.com/es/product/1782-624040-juego-de-llaves-de-vaso-y-punta#829806 Small insert in 1/4 ", large in 3/8".