Brand new and excessive qualityMaterial: PlasticColor: As picture 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 injury shaft, neend't maintenance.2. With superior wear-resistance and follow very well to rotation, swing and linear motion.3. It is straightforward to finish the meeting by way of simply pressing in along with your hand.4. Maintenance-free, self-lubricating, no use to refuel.5. Reinforcing fibers, fillers and stable 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 genuine coloration of the article could also be slightly diversified from the pictures shown on the web content caused by many factors akin to brightness of your visual display unit and light-weight brightness.2. Please enable slight guide measurement deviation for the data. Thank to your understanding.3. 1cm=0.39''.Package Included: 1x Linear Bearing