Williams O-474A 4 1/2 Inch-6 1/4 Inch Adjustable Pin Spanner Wrench Black

Spanner Wrenches Are Special-Purpose Wrenches With One Or More Pins, Which Insert Into Holes, Or Hooks, Which Catch On A Lip. Available In Several Styles, Including Face Spanner, Hook Spanners, And Pin Spanner Wrenches, They Are Designed To Drive Spanner Head Screws, Threaded Collars, Retainer Rings, Locknuts And So On.