Check the listing for details. Premium Precision TW16 Linear Motion 1" Bore Self Aligning Ball Bushing Bearing. Condition: New. Listed at 33.50 USD. Brand New, Fixed Alignment Type with Ball circuit of 5, Resin Retainer and built-in seals. Dimensions:Inner Diameter: 1" Outer Diameter: 1-9/16"Width/length: 2-1/4" Listed Price for ONE PIECE of product only. Order weight over 1Lb will be shipped by Priority Mail for Free. Defective items: 14 business days from date of receipt on items received not as described. All other returns - 30 business days from the date of receipt and all parts must be in their original condition. Parts damaged due to improper installation or abuse are not returnable. Buyer responsible for return shipping and original shipping cost, refund on item subject to a 20% re-stocking fee. Warranty seals may be present, seals are broken, tampered with or removed the warranty is void.