Feature 1SILICONE MATERIAL: An additive liquid silicone material with good resilience, high temperature resistance, and wear resistance. Low hardness, good softness, and rust free. Safe and durable, suitable for long term use. 2ALUMINUM ALLOY HANDLE: Wear resistant and durable, all aluminum alloy rubber handle, iron bearing, rubber bearing, non toxic, environmentally friendly, and not easy to rust. 3WITH STATIC ELECTRICITY: With the help of the static electricity, the roller can better clean small impurities such as hair, dander, dust, fibers, rubber powder, and copper powder on the surface. 4EASY CARRYING: Comes with a small size and being lightweight as well, this roller is easy to carry around for convenient use. 5APPLICABLE SCENARIOS: Clean hair for workers in dust free workshops and kitchens, cleaning tools for circuit boards, PCBs, LCD processes, light guides, accuracy printing of soft films, SMT, dust free rooms, electronic semiconductors, and other industries when producing products.Item Type: Dust Removal RollerRoller Material: SiliconeMelting Point: 150 Water Solubility: InsolublePeeling Test: Rolling 60000 times without peelingDiameter:Inner Outer Diameter: Diameter Approx. 28mm / 1.1inBearing Outer Diameter: Approx. 13mm / 0.51inInner Diameter: Approx. 6mm / 0.24inRoll Surface Hardness Parameters:Viscosity Type: Utra high viscosityViscosity Value: 900DHardness (Shore Hardness): 17 Applicable Scenarios: Clean hair for workers in dust free workshops and kitchens, cleaning tools for circuit boards, PCBs, LCD processes, light guides, accuracy printing of soft films, SMT, dust free rooms, electronic semiconductors, and other industries when producing products. .wang-edit-text{ font-family:'Arial' important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Dust Removal RollerNote1. Only small dust particles can be removed (not anti static)2. After use: Please use it to roll back and forth several times on the sticky paper to keep the surface of the sticky roller clean.