Polishing Bonnet is made of synthetic lambs wool. Used for compounding and polishing of soiled surfaces. No. 7410831: Diameter: 7", Pile Size: 1-1/8", Type: Synthetic Tie-On, Purpose: Compounds & Polishing, Pkg Qty: 1, Package Type: Bag Thanks for shopping Hipp Hardware Plus's Online Store for all your DIY and Home Improvement needs. Remember Hipps Help!