This is a Armeg 15-Piece Drill Bit Set that includes 2 x 5.5, 1 x 6, 1 x 7, 1 x 8mm twister masonry drill bits (150mm overall length), 1 x PH2, 4 x PZ2, 1 x PZ3 50mm twister screwdriver bits and 1 x PH2, 2 x PZ2, 1 x PZ3 75mm twister screwdriver bits.