Crossbolt spears are no doubt the most efficient bale spear design available. Pull the PTO pin and store the spear when no hay is being moved. Once the sleeve is welded onto your implement you can slide your bale spear into the sleeve slide the crossbolt through the sleeve and tighten the included nut. When finished untighten the bolt and remove the bale spear from the sleeve until you need it again. All hayspears are 1-5/8″