The Uni-Loc Weight Cartridge Kit lets you fine-tune the weight of your cue within a tenth of a ounce. Eight different weights, ranging from 0.1 oz. to 2 oz., give you up to 30 possible weight combinations for unmatched precision. The versatile installation tool has dual prongs that interlock with each weight and a detachable handle. The tool can be used with the handle for easy on-the-go tuning, or with a drill bit for lightning fast tuning at home. Weight sizes: 0.1, 0.2, 0.3, 0.4, 0.5, 0.7, 1, 2 oz. Works with: 8K SERIES BK III SERIES BLAK 2 3 SERIES CRM SERIES IKON2 3 SERIES P3 SERIES SP6 SERIES SPORT II SERIES THRONE SERIES LIMITED SPECIAL ED. (2012 NEWER) MOLINARI BY PREDATOR CAROM CUES