Comparison Chart of Tremolo Locking Devices

	Tremol-No™	Schaller® Device (available?)	Brass Device
Drilling/routing required for installation?	NO	Yes	Yes
Tech required to install?	NO	Recommended by manufacturer	No
Offers Hardtail/Fixed Bridge Mode?	YES	Yes	Yes
Offers Dive-Only Mode?	YES	Yes	No
Ability to use tremolo to lower pitch (dive) with drop tunings?	YES	Yes	No
Selectable pitch raising capability?	YES	Yes	No
Spring Loaded?	NO	Yes	No
Works with vintage style tremolos?	YES	Yes	Optional
Works with Floyd-type tremolos?	YES	With correct 'sustain clip' (+$$$)	Yes
Ability to select "mode" without tools?	YES	No	N/A
Ability to turn 'on'/'off' without tools?	YES	Yes	Yes
Works with all string gauges?	YES	.009's: Yes .010's & .011's: Requires purchase of 'power springs' (+$$$). .012's and above: No	Yes
Works with 7-string guitars?	YES	Information not available	Yes
Materials Used?	T-6063 Aircraft Aluminum & 304 Stainless Steel	Stamped Steel and Brass	Brass and Steel