Spring Clamp: An active clamp for fixing irregular objects. Holds securely: Strong clamps and rough surfaces make it possible to clamp items tightly to the stand. Material: Ratchet clamp is made of reinforced nylon material, which is comfortable to hold, durable and not easy to break. Easy to use: Fine tuning lock, 1 button unlock. Quickly release with 1 pull, saving time and effort. Chuck cushion: The chuck cushion can effectively protect the clamped workpiece without damaging the object, and can be adjusted at multiple angles. Specification: Material: reinforced nylon, aluminum alloy Size Chart: Style A:11.8cm/4.65inchx4.2cm/1.65inch,Clamping 4cm/1.57inch Style B:15.5cmx5.5cm/6.10inchx2.17inch,Clamping 5cm/1.97inch Style C:15.5cmx5.5cm/6.10inchx2.17inch,Soft rubber handle Style D:22cmx7.5cm/8.66inchx2.95inch,Soft rubber handle Package Includes: 1xSpring Clamp(Random Color) Note: Please allow slightly errors due to manual measurement and different monitors.