Compatible with Shimano Type B, Daiwa Type L reels. See detailed list of Compatible Reels in Description Section below. Dark Gun Knob/ Light Gun Shaft Diameter: 45mm. Length: 57mm. Weight: 38g Aluminum Power Knob Diameter:45mm. Length: 57mm. Weight: 38g Compatible with : Shimano: 2013 Stella SW -------2008 Stella SW ---------2009 Twinpower SW -------2008 Biomaster 6000PG and 8000PG ----------2009 Ultegra 6000PG ----------Daiwa: Saltiga Star Drag -----------Saltiga Lever Drag Hyper Speed------Saltiga Star Drag Saltiga Lever Drag Hyper Speed -----Tounament Ishidai Z -----Saltiga Z20-50, Catalina----- Seaborg (motor powered)----- Leobritz 270-750 (motor powered)----- '04 Saltiga Z 4000-6500------ Saltiga Blast, Catalina 4000/4500------ Seagate 4000-4500------ Phantom J 4000-4500------ Tournament Surf Basia 45QD2------ Tidesurf QD------ Tournament ISO ENTO 5500-6000