Jacoby Jumper Blue jump cue has a blue stained curly maple handle with finger groove at the joint for a ‘darting’ technique and a bell at the end for a ‘stroking’ technique. The shaft has a stiff taper with a 13mm G-10 phenolic tip and a 3/4″ brass ferrule. The total length of the cue assembled is 41″, consisting of a 29″ shaft and 12″ butt. The length of the butt including 10 thread pin and bumper is 13.5″. Jumper has a radial pin as well as a weight system to enhance the shot.