Profile: Kastar Hand Tools, Inc. is a producer of thickness & spark plug gauges, ratcheting box wrenches, rethreading tools, axle/spindle nut sockets and a wide variety of other specialty hand & automotive tools. We offer custom contract metal stampings and small engine pulleys. We provide 7-PC. ATV axle end thread restorer kit, 7-PC. SAE coarse thread restorer die set and 3-PC. thread restorer file set.