L-shaped ball-end torx keys for security screws, 7-piece set, manufactured from carbon silicon steel. its ball end allows a working angle of up to 15°, except for size t10, for easy access in confined spaces. includes sizes t10, t15, t20, t25, t27, t30 and t40 with magnetic easy-access and safe storage case. complies with torx® and resistorx® specifications