Comparison : Item # DWG#U-4650, Threader, thickness 0.199 / 0.205 in
Item # #3-8RD-EXT-0.620THK, Threader, thickness 0.215 / 0.221 in
Item # DWG#RDE4-625H, Threader, thickness 0.635 / 0.645 in
Item # DWG#U-5327-45º, Threader, thickness 0.215 / 0.221 in
Item # 8RD-INTBLANK, Threader, thickness 0.215 / 0.225 in