Aopin LM6UU Cylinder Linear Motion Ball Bearing, ID 6mm, OD 12mm Linear Ball Bearings Sae52100 Carbon Steel, 4 Rows of Steel Balls, Great for CNC, 3D Printer, Linear Rail Guide 12 PCS auspowers_batchtwo WILD ENVIRONMENTAL SCIENCE Extreme Crocodiles translate WILD ENVIRONMENTAL SCIENCE Extreme Crocodiles of the World For Ages 6+ Create and Customize Models and Dioramas Study the Most Extreme Animals 92" blade and beveled front edge can be used to sweep across and reach into the back under larger parts and provide leverage to pop even a stubborn piece up while the spatula is thin and flexible enough to get under even the most delicate of objects without distorting them 4 Rows Of Steel Balls Go Round And Round Application: Linear Bearings Are An Indispensable Part Of Linear Motion Modules