Check the listing for details. 1Pcs LMFP6UU-LMFP40UU Guide Round Flange Linear Bearings Linear Motion Bearing. Condition: New. Listed at 5.34 USD. Descriptions: Model: LMFP..UU Material: Housing bearing steel, cage nylon Shape: guided round flangeDirection of motion: linear motionDimensions.LMFP6UU 6x12x19mmLMFP8UU 8x15x24mmLMFP12UU 10x19x29mmLMFP13UU 12x21x30mmLMFP10UU 13x23x32mmLMFP16UU 16x28x37mmLMFP20UU 20x32x42mmLMFP30UU 25x40x59mmLMFP25UU 30x45x64mmLMFP35UU 35x52x70mmLMFP40UU 40x60x80mmProduct features: Linear bearings are used in conjunction with hardness linear drive shafts. The linear bearings are used in conjunction with hardened linear drive shafts for infinite linear motion systems. Because the ball and hardness drive shaft is point contact, so the load is small, the allowable load is smaller.But relatively speaking, linear movement, frictional resistance is small, improve the high precision, fast movement.(Matching linear bearings are recommended to use the hardness of the shaft, the surface of the ordinary shaft without hardness is easy to set loss) Package include: According to your choice. Payment: PayPal, PayPal Credit, MasterCard, Apple Pay, Google Pay...are all supported. Shipping: Please make sure your address 100% right. Return Policy: If you are not satisfied with the item,any problem,please contact with us before you give a negative feedback,because it doesn't help you at all.we will try our best to help you solve the problems. Feedback: Your satisfaction is very important for us.If you are satisfied with our item or service,please give us a positive feedback and 5-Star DSRs rating. Contact Us: We are very glad to help you,please feel free to contact us whatever any problems.Due to high volume of daily incoming emails and time zone difference,please allow 24 hours for us to reply. About Item: For the funcitonal products in our shop,we make sure that the functions are the same as description,but the actual color and shape may looks a little different from pictures because of the technical improvement and manufacturing variance.Please be advised before you bid.