a better bite on your spindle with PSI 's new to 1 ' Super Center. More teeth a better bite while providing touch pressure and a overconfident drive. There no need to hammer your drive center into the work piece and risk cacophonous your work. The PSI Super Center compatible with headstocks with # 2MT spindles. Spring squiffy point spindle centering and retracts to avoid cacophonous your work when tailstock pressure is applied. in impressionable production sleeves at 4.8-ounces. '' by 1.5 '' by 1.5 '' with a 1-inch crown.