... broken needles, iron wires in product Hand-held needle detector Model : TY-20MJ Type Featrue:1.Uses a light & sound ... products. 3.Workable continously long-term,heat-resistantApplicable Industries:Hand-held needle detector is applicable to garment, textile, bra, ... scrap iron in products, preventing metal pollution of the products and guaranteeing product quality. TY-20MJ Hand-held needle detector