Baier Commercial Replacement Stainless Steel replacement center bolt and T-handle for T-handle style hatches. This kit replaces the the keyway style Centerbolt that was sold on T-handle Strongback hatches in the past. Updated Design Features Include: Stronger Design - By eliminating the Keyway allows applying great torque to the centerbolt. Simpler Design - Fewer working pieces to break or get lost. Easy Retrofit - Completely interchangeable with all old style T-handles. This part in not interchangeable on other models of Baier hatches such as the Hex Centerbolt or Quick Acting Hatches.