SPT3P: 3″ Tapered 5/8″-3/8″ Width
SPT3S: 3″ Straight 5/8″ Width
SPT4S: 4″ Straight 3/4″ Width
SPT5S: 5″ Straight 13/16″ Width
SPT6S: 6″ Straight 1″ Width
SPT8S: 8″ Straight 1-1/4″ Width
SPT10S: 10″ Straight 1-1/2″ Width