Unsurpassed for performance and tuning stability without the need for a mechanics tool kit to change strings! A precision machined hardened steel base plate with stainless steel saddles give years of use and abuse without failing you. The saddles are locked down to the baseplate, allowing the full transfer of the string vibrations into the whole bridge and increasing sustain. Also includes a stainless steel arm that is held in with a collar allowing for tension adjustment. Mounting posts, springs, claw, screws and allen keys are all included