Allstar Performance 1/2-20" LH Thread Jam Nut Aluminum Natural - Set of 10 LK22173 Tool has two different radiuses

Tool has two different radiuses to create the correct flare for your needs

Chevy Fullsize Car 1955-56

fits 18688 and 18689Aeromotive Inc

GMC: Sierra 1500 19 - 19

3-3/4 in Thick

Allstar Performance 1/2-20" LH Thread Jam Nut Aluminum Natural - Set of 10 LK22173 Tool has two different radiusesAllstar jam nuts have many uses. Great for locking rod ends tightly on suspension tubes or rack and pinion steering units. Package of 10, unless noted. Specialty items for the Shop, Trailer and Track. The Allstar Performance brand offers thousands of hard to find, specialty items that cover many segments in the performance aftermarket. For over 30 years, customers worldwide have come to rely on the quality, affordable and practical items available