Brand new and excessive qualityMaterial: PlasticColor: As photograph 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, dirt proof, shock proof, noiseless, no injury shaft, neend't maintenance.2. With advanced wear-resistance and apply very well to rotation, swing and linear motion.3. It is simple to complete the assembly by simply urgent in together with your hand.4. Maintenance-free, self-lubricating, little need to refuel.5. Reinforcing fibers, fillers and solid grease are added to the bottom material, in order that the bearings meet the performances of wear-resistance , excessive load, and lubrication.Notice:1. The real color of the object could also be slightly varied from the pictures proven on the web content caused by many points reminiscent of brightness of your video display and light-weight brightness.2. Please allow slight guide measurement deviation for the data. Thank in your understanding.3. 1cm=0.39''.Package Included: 1x Linear Bearing