F624ZZ Flanged Ball Bearing
The price marked is for 10pcs F624ZZ Flanged Ball Bearing, it's one of the best and cost effective Timing Belt Idler Pulley for 5, 6 or 6.35mm Timing Belt. 10pcs in 5 pairs as 5 Idler Pulley, you save at least 3USD.
You can use a F608ZZ Flanged Ball Bearing with a M8 Washer as Idler Pulley for a 8mm Rod or Screw. F624Z Flanged Ball Bearing are for 4mm rod or m4 screw.