ITEM NAME:8mm Inner Diameter Square Flange Linear Motion Bushing Ball Bearing LMK8UU D4M5 8mm Inner Diameter Square Flange Linear Motion Bushing Ball Bearing LMK8UU D4M5 Package Content : 1 x Linear Bearing The universal Ball Bearings is great for you to replace the damaged Ball Bearings in your devices to improve them efficiency and save energy. Widely used in home appliances, industrial, low noise and high speed electric motors, construction machinery, automotive components, pumps, and machinery. Smooth moving, low friction, high rigidity and long life. Economical, easy to maintain replace. Product Name : Linear Bearing Model : LMK8UU Material : Metal, Rubber Inner Diameter : 8mm/ 0.31" Outer Diameter : 15mm/ 0.6" Length : 24mm/ 0.94" Square Size : 25 x 25 x 5mm/ 1" x 1" x 0.2" (L*W*T) Mount Hole Dia. : 3mm/ 0.12" Hole Pitch : 17mm/ 0.67"(Center to Center) Main Color : Silver Tone Net Weight : 28g Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm..Model : LMK8UU. Hole Pitch : 17mm/ 0.67"(Center to Center). Net Weight : 28g. Square Size : 25 x 25 x 5mm/ 1" x 1" x 0.2" (L W T).