Material: plasticLength67mm Good Compatible With grass and thin brush, not Compatible With young trees or other hard materials. Compatible With best use, avoid using this attachment Compatible With edging, working with bricks, chains, or bricks Suitable Compatible With RYOBI RAC155 RAC157 Edger in water at night beCompatible With e using them, they will last longer. Quantity: 50 Compatible With blades Compatible With RAC158, perfect Compatible With blades Compatible With the original blades.”,