HEADSET	Threaded or Threadless	Sizes	Built-In Head lock	Needle Roller Bearing	Sealed Cartridge Bearing	Anti-Dirt O-Ring Seals	Stack Height	Headlock Wrench Width	Upper Cup Wrench Width	Colors	Weight	Price
Shimano 7410 Dura Ace	Threaded	1"	no	no	not strictly	yes	37.6mm	32mm	32mm	Silver	102.5 g.	$  76.99
Shimano 6500 Ultegra	Threaded	1"	no	no	not strictly	yes	37.6mm	32mm	32mm	Silver	110 g.	$  42.99
Shimano 105SC	Threaded	1"	no	no	no	yes	32.7mm	32mm	32mm	Silver	116.5 g.	$  24.99
Shimano XTR	Threaded	1" - 1 1/8" - 1 1/4"	no	no	no	yes	34.3mm
34.3mm
40.3mm	32mm
36mm
40mm	32mm
36mm
40mm	Silver	116.5 g. - 135 g. - 163 g.	$  87.99 - $106.99 - $106.99
Shimano 740 Deore XT	Threaded	1" - 1 1/8" - 1 1/4"	no	no	not strictly	yes	37.6mm
37.6mm
39.9mm	32mm
36mm
40mm	32mm
36mm
40mm	Silver	115 g.- 1" - 124.5 g-1 1 /8" - 139 g-1 1/4"	$  49.99 - $  56.99 - $  56.99
Shimano 560 Deore LX	Threaded	1"  - 1 1/8"	no	 no 	no	yes	37.6mm
37.6mm	32mm
36mm	32mm
36mm	Black	143 g. -1" - 158 g-1 1/8"	$  27.99  - $  34.99
Stronglight A-9	Threaded	1"	no	yes	no	no	42mm	32mm	32mm	Black, Silver	79.5 grams	$  29.99
Stronglight Delta	Threaded	1"	no	yes	no	yes	42mm	32mm	32mm	Black, Silver	85.5 grams	$  39.99
Stronglight X14	Threaded	1"	yes	yes	no	yes	39mm	32mm	-	Silver	112 g.	$  42.99
Stronglight X15	Threaded	1 1/8"	yes	yes	no	yes	40.3mm	36mm	-	Ti Grey	155.5 g.	$  54.99
Syncros Hardcore	Threadless	1" - 1 1/8"	-	no	yes	yes	31.5mm	-	-	Black	122 g. - 1"	$149.99
Tioga Avenger	Threaded	1" - 1 1/8"	no	no	no	yes	31.5mm	32mm
36mm	32mm
36mm	Black, Silver	     g.- 1" - 179.5 g.-1 1/8"	$  16.99 - $  16.99
Tioga Master DL	Threaded  & Thredless	1" - 1 1/8"	no	no	no	yes	33.5mm	32mm
36mm	32mm
36mm	Black, Silver	98 g.-1 " - 147.5 g.-1 1/8"	$  26.99 - $  26.99
Tioga ST-SAlchemy	Threadless	1 1/8"	no	no	no	yes	28mm	-	-	Black, Silver	144 g.-1 1/8"	$  29.99
Tioga ST2 Alchemy	Threadless	1 1/8"	no	no	no	yes	28mm	-	-	Black	141.5 g.-1 1/8"	$  19.99
WTB Classic Greaseguard	Threaded	1"	no	no	yes	yes	42.9mm	32mm	32mm	Black, Silver	107.5 grams	$186.99