Toothbrush style scratch brush with 0 003 Stainless Steel Bristle and a Plywood Handle in a curved design for knuckle protection The stainless steel bristle hand laced with stainless steel wire remains secure even in wet environments if the wooden handle expands or contracts Hand laced brushes are the premium brushes in the industry Each fill tuft is tied into position by hand resulting in a superior quality brush with maximum fiber retention Greater bristle density than staple set brushes Specifications . Row 3 x 7. Fill Material Stainless Steel. Handle Material Wood. Handle Length 7 3 4 . Handle Width 7 16 . Bristle Diameter 0 003 . Trim Length 7 16