Apex RC Products 5 Pack 16mm x 200mm HD Rubberized Battery Straps Non-Slip 3020 Great For Securing Batteries and Electronics Works For Quads, Drones, Helis, Planes and Cars Non-Slip Rubberized Coating - Keeps Batteries & Electronics Securely in Place! Fits Most 3S-4S Lipo Batteries - Perfect For Most 250mm FPV Racer Batteries High Quality