Renzetti vises will last a lifetime, but sometimes the small moving pieces within vise can wear over the years and need servicing and replacement. These kits are designed for each individual series of Renzetti vise and will keep your tool running smoothly for a lifetime. All Traveler X9003 - (2) urethane jaw O-rings, (1) rotary tension screw, (1) jaw adjusting screw, (2) jaw springs, (2) ball bearings All Travelers X9029 - (3) nylon washers, (2) urethane jaw o-rings, (1) rotary tension screw, (1) jaw adjusting screw Presentation X9004 - (2) urethane jaw o-rings, (2) jaw springs, (2) ball bearings, (1) jaw adjusting screw Master X9009 - includes the Jaw Adjusting Screw and springs Master X9050 - includes an all-metal jaw adjusting screw and an all-metal rotary brake screw. Saltwater Traveler X9006 - (2) jaw o-rings, (2) jaw springs, (2) ball bearings, (1) jaw adjusting screw