{"title":"20mm Height Metal Caster Bearing Wheel","handle":"20mm-height-metal-caster-bearing-wheel","url":"/products/20mm-height-metal-caster-bearing-wheel","description":"A durable steel ball caster with smooth, fluid motion — ideal for providing a third contact point on small robot platforms. The 20mm overall height pairs well with common robot chassis and TT motor setups, and the two screw mounts make it easy to attach to any material.\n\nKey Features\n\n\nSteel Ball Caster – Smooth, low-friction rolling in all directions\n\n20mm Height – Suitable for most small robot chassis\n\nTwo Mounting Holes – 4mm diameter, 40mm apart (use M3 or 4-40 screws)\n\nCompact & Lightweight – Only 19.7g\n\n\nSpecifications\n\n\nBall Diameter: 15.7mm\n\nOverall Height: 20mm\n\nMounting Hole Diameter: 4mm\n\nMounting Hole Spacing: 40mm\n\nFixed Hole Diameter: 3.1mm (below bearing)\n\nWeight: 19.7g\n\n\nIdeal For\n\nSmall robot platforms and 2WD chassis\nThird wheel / balance point for differential drive robots\nDIY robotics projects\n\n\nPackage Contents\n\n1× 20mm Metal Caster Bearing Wheel\n\n\n\nNote: Mounting screws are not included. Use M3 or 4-40 screws to attach.\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":5896,"title":"Default Title","sku":"AF-3948","price":4.71,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":106,"option1":"Default Title"}]}