... ,bristle & Synthetic and so on, 2.wooden handle 3.different size 4.different bristle visible length Paint brush ,Material: Pure bristle , Polyester, Mix ... -plated,brass-plated,stainless steel or plastic ferruleHandle: plastic handle,wooden handle,PP+TPR handlethe comfortable type of the operation handle ... LENGTH(mm)384545454551535858dIAMETER OF FERRULE(mm)7.588.5101010111112.5 Paint Brush