PEC Adjustable Hook Rules Made in U.S.A. Accuracy meets Federal Specifications. Tool Steel, hardened and tempered. Thickness .040" Micro chrome finish, no glare. Furnished with adjustable hook. 4R: 8ths, 16ths, 32nds, 64ths 16R: 32nds, 16ths, 50th & 100ths PE: 32nds & 64ths on opposite sides.
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