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This set includes two spindle bars and two rubber grips. Spindle “Tommy” Bars are use to aid in the operation of opening and closing scrolling chucks.
“Tommy” bars can be hard on your fingers when tightening or loosening a chuck or removing a tool from the spindle. These molded rubber end caps (see picture below) give a more comfortable and secure grip. They also prevent spindle bars from rolling off your bench. These covers are sold separately as P/N 4058.