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The R.H. Little Co. currently produces 32 different types of narrow pedestal and special-use roller bearing adapters. AAR-approved and M-1003 certified, the company offers nearly every size from stock inventory. Sizes start with the Class B 4-1/4x8 and progresses through the alphabet to the various types of Class G 7x12s, including the K, L and M class adapters. All R.H. Little Co. adapters are American made from domestic iron and machined to AAR specifications in the company's Canton, Ohio, plant.