Mold Coolant Counterbore SKU A (inch) B (inch) HFPN251 0.69 0.69 HFPN252 0.84 0.94 HFPN253 1.00 0.97 HFPN352 0.69 0.94 HFPN353 0.84 1.13 HFPN354 1.00 1.25 HFPN554 1.25 1.50 HFPN556 1.50 1.56