device 100 is in driving engagement therewith the main body 108 is a l shaped member the arm member 110 and the first cone pin 112 are adjustably disposed within the main body 108 includes a first leg 114 a second leg 116 a second cone pin 118 and at least one arm member fastener 120 an arm member perforation 122 is formed through the first leg 114 and a cone pin perforation 124 is formed through the second leg 116 the main body 108 is formed by casting and machining a metal however it is understood that other processes may be used to form the main body 108 the first leg 114 is an elongate member having a rectangular cross section the arm member perforation 122 is formed lengthwise through the first leg 114 and has a diameter which permits the arm member 110 to be disposed therethrough the at least one arm member fastener 120 is threadingly disposed in a perforation that intersects the arm member perforation 122 when the at least one arm member fastener 120 is driven to engage the arm member 110 disposed in the arm member perforation 122 the arm member 110 is coupled to the main body 108 the second cone pin 118 extends outwardly from the first leg 114 and is coupled thereto in any conventional manner a diameter of the second cone pin 118 substantially corresponds to the apertures 102 of the first end cone 19 the second leg 116 is an elongate member having a rectangular cross section the second leg 116 is oriented transversely to the first leg 114 the cone pin perforation 124 is formed through the second leg 116 transverse to the second cone pin 118.