Eisco Labs Plastic Pulley, Triple-Parallel, 50mm Diameter sold2026 reaching the depth of hardness

reaching the depth of hardness needed for its unsurpassed level of security (unlike case hardening which is only a surface treatment)

BRING BACK TO LIFE YOUR FAVORITE BELT: Have fun adjusting your favorite belts to fit you perfectly again

5mm -----50pcs / 2mm-----50pcs 2

make sure the input and output holes are concentric

Eisco Labs Plastic Pulley, Triple-Parallel, 50mm Diameter sold2026 reaching the depth of hardnessEisco Labs Plastic Pulley, Triple Parallel, 50mm Diameter One (1) high quality, triple plastic pulley in parallel, on a steel frame, with hooks at each end carrying three plastic pulleys each of diameter 50 mm. Inner gap of pulley measures 4 mm, overall length is 8. 9 cm. Capable of holding over 30 lbs of weight. Product Features Diameter 50 mm