Made of 304 stainless steel, sturdy and durable, can adapt to various indoor and outdoor environments.Ball point set screws are mainly used in fixtures and machinery for fixing and positioning.Specification:Material: 304 Stainless SteelFinish: PolishingThread Size: M4 x 10mmThread Pitch: 0.7mmDrive Type: Hex SocketHex Socket Width: 2mm / 0.08"Ball Plunger Diameter: 2.5mm / 0.1"Elastic Range: 3.0 - 15.0NBall Plunger Stroke: 0.8mm / 0.03"Package Content:20pcs x Ball Point Set Screws