Plastic Adjustable Handle Lobe knob Turning handle Star Knob Clamping Knob Plastic Adjustable Handle1. Material: ABS, PVC, PP, PC, PE, NILOY ... strict inspection processes in order to ensure the quality. Turning handle:Materials: ABS, PP, POM, NYLON, HDPE, PVC, HIPS, TPU ... parts OEM We can make plastic star knob and provide skillful clamping knob based on your samples blueprints or specifications ...