is dropped or thrown referring to fig2 the central opening 15 is cylindrical and is designed to clip onto the shaft of a baseball bat fig5 conforming to the exact shape of the shaft 40 advantageously the device clips on easily and stays securely on the shaft without the need for any straps or other securing devices when configured for use on the shaft of a baseball bat the inner diameter of the body 12 may be for example 20 to 30 mm e g 22 to 25 mm when configured for use on the shaft of a softball bat the inner diameter of the device is preferably 22 mm but can range from 15 to 24 mm when configured for use on the shaft of a wooden baseball bat the inner diameter of the device is preferably 26 mm 31 mm but can range from 24 nun to 32 mm the body 12 is sufficiently long so that it will not twist off of the shaft of the bat during use or when the bat is dropped or thrown without being so long as to add unnecessary weight the device 10 may be constructed for example of molded plastic any desired plastic may be used that provides the desired device characteristics most injection moldable thermoplastics are suitable such as polypropylene polyurethane or high density polyethylene the plastic is generally selected so.