Pack of 24 screws. 4 x M3 x 5 mm, 4 x M4 x 5 mm. Quality stainless steel A2. For hexagon/Allen keys. Tapered tip DIN916. Adjusting screw/clamping screw. Metric thread M3-0.5 mm, M4-0.7 mm, M5-0.8 mm, M6-1.0 mm. Requires M3/1.5mm, M4/2mm, M5/2.5mm, M6/3mm allen/hex key.