Profi-Key. Key for heating, air conditioning, plumbing, and building technology, for example, for door and window handles or for radiator bleeding. With bit insert: slotted 1.0 x 7 mm and Phillips PH2. With adapter for 1/4 inch bits on a mounting chain. Additional bit holder for 1/4 inch bits in one arm. Capacity for hexagon, capacity in mm², square connection, capacity for square 5 / 7 / 8 mm, capacity for step square 6 / 7 / 8 / 9 / 10 mm, capacity for triangular 9 - 10 mm. Clamping range for hexagon, clamping range for round, clamping range for square.