As you can see, our silicone sock has a very good edge treatment,the outer wall is very smooth and the edges are perfect Only Compatible with for K1 , K1 Max, 3 V3 KE and CR10 SE 3D Printer, Cannot fit for other types 3D Printers, please know before ordering Made from high temperature Silicone material , can work for long time at 300 degree. But PLEASE NOTE if your printing temperature is over 300C degree, please remove the silicone cover before starting printing. High Precise size, It can be assembled more perfectly and is very beautiful. K1 silicone socks can accelerate the heating process, avoid heat dissipation at the heating end, stabilize the temperature at the heating end, and is not affected by any environment. Colour:orange red Material:Silica gel Package Contents: 3 x silicone covers 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.