... customer's drawings. Heavy duty NA4901 NA series needle roller bearing ID Size:12mm-24mm-13mm N.W ... samples pictures: Products nameHeavy duty NA4901 NA series needle roller bearingBrand nameIKO.neutral brand.imported brand or be ... size12mm-24mm-13mmmaterialGcr15Weight0.028kgSealingOpen, Z, ZZ, RZ,2RZ,RS, 2RSQuality standardISO9001:2000 standardServiceOEM & ODM serviceDelivery dateNormally ready ...