Ball for 3″ piston$6.80 for 3″ Piston pump Part# 10002045 Ball for 3" piston quantity Add to cart Category: Sun Mill/Solar Mill Parts Additional information Additional information Weight 0.24 kg Related products Bolt stroke bar $1.50 Connecting Crank Rod to Stroke Bar Part# 10035641 Brushes 60v 540w motor $34.10 for 60v motor pack of two Part# 10007700 Seal 2″ piston nitrile $23.76 for 2″ Piston with 9.5mm grove Nitrile Part# 10002700 Rod 3″ pump $121.00 Nylon for 3″ Tall Pump Drive Transfer Part# 10005854