Oil Seal TC 105x130x12mm - TC Double Lip NBR Rubber Oil Seal with Garter Spring SMSK12G They're perfect for serious cyclists

They're perfect for serious cyclists who want every bit of efficiency out of each ride

Dimensions: 20*47*14 mm/Metric

single bearing 31305 tapered roller bearing is a cone-and-cup package made from 52100 chrome steel

✔️ Si3N4 Ceramic Balls - 1/2" x 3/4" x 5/32" Inch

H1 4-1/16"

Oil Seal TC 105x130x12mm - TC Double Lip NBR Rubber Oil Seal with Garter Spring SMSK12G They're perfect for serious cyclistsThe TC105x130x12 is a double lip rotary shaft seal, block out dirt & lock in grease or oil. Designed for a shaft diameter of 105mm Width 12mm, with a bore diameter 130mm Nitrile Rubber Lip Material. Item Sku : TC105x130x12 Type : Oil and Grease Seal TC 105x130x12 mm Shaft diameter (inner): 105mm Housing bore (outer): 130mm Width : 12mm Size : 105mm x 130mm x 12mm Oil and Grease Seal Material : Nitrile Butadiene Rubber Temperature Range : 40 to 248F