Factory Direct Supply Silicone Jump Rope Handle Cover Bicycle Silicone Rubber Cover. Extensive Material Options: Available in NBR, EPDM, Silicone, FKM, CR, NR, SBR, ACM, and more. Custom Size & Hardness: Size and hardness (Shore A) are fully customizable to your specifications. OEM/ODM Service: Accepts 2D/3D drawings and samples for custom molded rubber products. Professional R&D Team: Over 120 staff experts ensure high-quality design and development. International Certifications: ISO 9001, ISO 14001, IATF 16949, UL, CE, and FDA compliant. Fast Standard Delivery: Standard sealing products delivered in 3-7 days; custom in 15-20 days. Free Sample Testing: Free samples provided for testing; customer pays freight charges. High Performance: Features compression resistance, oil/water resistance, and toughness.