uxcell 3 8 Inch Precision Solid Brass Bearing Balls 20pcs 3 8'' 20 auspowers_batchfive this 1 4" drip emitter connector Please note that for this 1 4" drip emitter connector provides a leak proof connection to all brands of 1 4" drip tubing Every standoff has 2pcs silicone washers for protecting signs some of the most common are listed below: 1 8" is often used for clusters and old English style headsets 1 4" is often used for rear wheels and bottom brackets 3 16" is often used for front wheels 5 32" is often used for headsets with pressing cups Specification: Size: 3 8" (9 015mm Material: Brass (H62) Package Content: 20 Piece