5-TAKE NOTICE OF- Please refer to the picture and choose the right size and thread type before purchase. 2-MATERIAL- The bearing is made of #45 Steel, which has high hardness and mechanical properties and great wear resistance showing stable performance, which contains lasting service life. 1-PACKAGE CONTENT- The package comes with 1Pcs SI20TK PHSA20 rod end joint right hand female thread end rod. Shop for the Gonzalez Regular Cut Bb Clarinet Reeds in Strength 3 and receive free shipping and guaranteed lowest price PHS 20 Right, Bore 20mm, Female Right Hand Metric Threaded Rod End... SI20TK PHSA20 Ball od End Beaing 20mm Self Lubicated Joint The bearing number is M20X1.5. The inner diameter is 8mm. -The bearing has a self-lubricated ball socket, with low noise, and is tough, durable. SPECIFICATIONModel: SI20TK PHSA20Color: Silver ToneDimension: 103mm x 50mm (L*W)Radial Static Load Capacity: 57KNRadial Dynamic Load Capacity: 42.5KNMaximum Angular Misalignment:14°Quantity: 1 PackTAKE NOTICE OF- Please refer to the picture and choose the right size and thread type before purchase. 4-DURABLE-The bearing has a self-lubricated ball socket, with low noise, and is tough, durable. Si22t/K Phsa22 Female Thread Metric Rod End Joint Bearing Si25t/K Phsa25 - Rod End, Joint Bearing