Steel Retainer Cups are alloy steel, precisely machined to specified dimensions, and plated inside and out to resist corrosion. All bearing surfaces are plane to within 0.002in (0.05mm). The 6in Retainers meet “acceptable configuration” of AASHTO T 22 and do not require acceptance testing as with alternate systems. Steel Retainers are sold in sets of two. Est. Ship Wts.: 6in Steel Retainer 25lb (11kg), 4in Steel Retainer 18lb (8kg).
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