Suitable for porcelain glue seams: metal ball tile joint finishing tool can be applied to suppress tile grouting, quickly fill the slit after use, and make the coating fill the tile joint; It can effectively enhance the smoothness of the tile slit, improve labor efficiency and make work easier Decontamination function: our grouting saw is suitable for cleaning slit; It can be applied to remove grout, mortar, flakes, caulking and surface residues that you don't need; It is easy to use and saves time and effort Material: metal ball jointing tools are made of alloy steel and are durable and reusable; The outer layer is protected by a blue plastic sleeve for comfortable and convenient grip Size: metal ball diameter dimensions: 4 mm/ 0.16 inches, 6 mm/ 0.24 inches, 8 mm/ 0.31 inches, 9.5 mm/ 0.37 inches, 11 mm/ 0.43 inches, 12.7 mm/ 0.5 inches, 15.8 mm/ 0.62 inches, 19 mm/ 0.75 inches; Grouting saw size: handle length 12 cm/ 4.72 inches; Knife length: 7 cm /2.76 inches Colour: yellow Material: plastic + alloy Package Contents: 4 x metal ball tile joint finishing tools 3 x grout saws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.