HIGH QUALITY MATERIAL: Made of soft thick wool, soft & enviromental-friendly natural material without scratching the when polishing. SIZE:Outer Diameter: 4inch; Second inner diameter: 1.88inch; innermost diameter: 0.62inch; wool pad thick: 0.4inch STURDY & : The disc pad is wear resistant and safe for long service period.The plastic cover and high density and long wool discs are tightly connected for long term use. WIDE APPLICATION: This buffing wheel disc pads are widely applicable in buffing and cleaning, such as metal derusting, glass and ceramic polishing, marble, automotive and wood floor polishing, etc. TIPS: Please wear personal as required and pay attention to the speed. Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Green Material:wool Size:Coarse wool style 100x10x16mm Package Contents: 18 * 4 Inch Round Wool Felt Disc Wheel Pad Only the above package content, other products are not included.