Allstar 1-1/2 inch Taper 7.15 Degree Taper Reamer with T-Handle has a t-handle with a 7.15 degree taper and has 1-1/2 inches of taper per foot. It allows the user to repair or enlarge tapered holes to accept tie rod ends or ball joints. It may also be used in a drill with a 1/2 inch chuck by removing the t-handle..