Features a special trigger ratchet mechanism for tight compression. Hardened steel for durable wear. Kit includes: Compressing Pliers (GPS-98A) Replacement Bands: 2.875″ – 3.125″ Range (GPS-98B), 3.125″ – 3.375″ Range (GPS-98C), 3.375″ – 3.625″ Range (GPS-98D), 3.625″ – 3.875″ Range (GPS-98E), 3.875″ – 4.125″ Range (GPS-98F) and 4.125″ – 4.375″ Range (GPS-98G)