**Category Description: Sleeves for magnetic bars (insulated and non-insulated). △Product Features: High strength, adjustable magnetism by customer demands,△ accurate dimension, 155℃ and 180℃ temperature resistance, and special customization.△ Materials: Epoxy glass fiber plus magnetic powder (not added for insulated types, adjust the proportion of magnetic powder according to customer demands). △Colors: Black (magnetic), light green (unmagnetized) or other customized colors. △Thickness: Single-side thickness of sleeve: > 0.5mm. △Precision: Internal diameter tolerance: < 0.05mm. △Surface Finishment: By customer demands. An ideal product fully replacing imported magnetic sleeves.