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At Assenmacher Specialty Tools, we manufacture and distribute a full line of Specialty Tools, Cooling System Adapters, Oil Change Products, Cam Alignment Tools and Disconnect Tools for Asian, Domestic and European vehicles.

Located in beautiful Boulder, Colorado, AST was founded in 1978 by Gerhard Assenmacher and has remained at the forefront of independently owned tool companies since our beginning. Many decades of hands-on industry experience is what makes our team stand above the rest. We build relationships, we know our customers and we know our products. We take pride in the fact that our customers can simply pick up the phone and we are always there to help–that's personal service you’ll find only at AST.