Soundcare® SuperSpike: You can’t do better !!! Threadsize information: - It can be smart to measure your old spikes before you buy. Here you have some thread specifications: - M6 --> 6mm outher diameter --> 10 threads per cm - M8 --> 8 mm outher diameter --> 8 threads per cm - M10  --> 10 mm outher diameter --> 6,67 threads per cm  (supported with combination M6 spikes and M6 to M10 threadconverter). - M12 (NOT SUPPORTED) --> 12 mm outher diameter --> 5,7 threads per cm - 1/4" --> 1/4 inch = app. 6,35 mm outher diameter --> 20 threads per inch = app. 7,8 threads per cm. - 5/16" --> 5/16 inch = app. 7,94 mm outher diameter --> 18 threads per inch = app. 7,05 threads per cm. - 3/8" --> 3/8 inch = app. 9,3 mm outher diameter --> 16 threads per inch = app. 6,45 threads per cm. (supported with combination 1/4” spikes and 1/4” to 3/8” threadconverter). - 7/16" (NOT SUPPORTED) --> 7/16 inch = app. 10,1 mm outher diameter --> 14 threads per inch = app. 5,65 threads per cm. - 1/2" (NOT SUPPORTED) --> 1/2 inch = app. 12,4 mm outher diameter --> 12 threads per inch = app. 4,85 threads per cm. Some speaker brand names and the most common threadsizes to use: The threadsizetable is only guiding. Please check your old spikes before ordering. Soundcare does not have any responsibility if the threadsize on your speakers vary from the sizes in the table. Speaker Threadsize Acqustic Energy M8 ATC M5 (not supported) ALR/Jordan M8 Amphion M6 Apertura M8 AR M6 Atacama M6 Audio Vector M3 M6 Audio Vector S6 M8 Audio Pro Black Diamond M6 Avantgarde M8 & M10 BOLTZ USA 5/16" B&W M6 & M8 & M10 Boston 1/4" Canton M6 Castle Acoustics M6 & M8 Celestion M6 Chalio M6 Coincident 1/4" Dali M6 & M8 & M10 Dynaudio M8 % M10 Dynavoice M6 Empire M M8 Energy 1/4" & M6 Forsman M8 Gale M6 Gradient M6 Heco M6 & M8 Highland Audio M8 Infinity Alpha M6 Infinity Kappa M8 Infinity USA 1/4" Jamo M8 JBL M6 & M8 JM Lab M6 / M8 JPW M8 Kef M6 Kef Q M8 Klipsch M6 & 1/4" Linn M8 Magnat M6 Martin Logan 1/4" & 5/16" & 3/8" McIntosh 1/4" Meadowlark (new models) 1/4" Meadowlark (old models) 3/8" Meridian M6 & M8 Mirage 1/4" Mission M6 & M8 M.M.Sound M6 & M8 Monitor Audio M6 Monitor Audio Studio 50 & 60 M8 & M10 finethreads (not supported) Monsoon M6 Mordant Short M6 Newform Research 1/4" NHT 1/4" Paradigm M6 Patos Basic M6 Patos Lyric M8 PSB 1/4" Phase Tech. 1/4" Proac Studio/Resp. M8 & (M6) Pro Tech M8 PSB 1/4" QLN M8 REL M8 Ruark M8 Snell 1/4" & 5/16" Sonus Faber M8 Sound Dynamics 1/4" StandDesign M8 System Audio M8 Tannoy M6 & M8 Target Racks M6 & M8 TDL M6 Thiel (CS1.6,.6,7.2) 5/16" Totem 1/4" Vanderstein 1/4" Vantage M8 Vienna Acoustics M6 Wharferdale M6 Wilson Beuesch M8 Yamaha M6