Brand new and excessive qualityMaterial: PlasticColor: As photo showsSize of RJMP-01-08: 8*16*25mmSize of RJMP-01-10: 10*19*29mmSize of RJMP-01-12: 12*22*32mm Features:1. Corrosion-resistant, dust proof, shock proof, noiseless, no damage shaft, neend't maintenance.2. With advanced wear-resistance and practice thoroughly to rotation, swing and linear motion.3. It is easy to complete the assembly through easily pressing in together with your hand.4. Maintenance-free, self-lubricating, little need to refuel.5. Reinforcing fibers, fillers and strong grease are added to the base material, in order that the bearings meet the performances of wear-resistance , excessive load, and lubrication.Notice:1. The real coloration of the article could also be barely assorted from the photographs proven at the web page attributable to many points such as brightness of your video display and light brightness.2. Please enable slight manual size deviation for the data. Thank to your understanding.3. 1cm=0.39''.Package Included: 1x Linear Bearing