Wedge Type Quick Change Tool Post Set. 251-222 BXA 200 Series Set. Includes: Wedge Type Tool Post, and 5 Holders. Holders Included in the set. Turning and Facing Holder will hold tooling up to 5/8. Boring and Facing Holder will hold tooling up to 5/8. Heavy Duty Boring Bar Holder will hold boring bars up to 3/4. Knurling / Facing Holder will hold tooling up to 5/8. This set will work for most lathes in the 10"-15" range. Please measure the distance from the top of the compound slide to the spindle/workpiece centerline on your machine. If you have more than 1-1/4", and up to about 2" in ...